Self Power Numbers - Unfinished business!

[Maximilian Hasler]

On Feb 2, 2008 10:23 PM, Alexander Povolotsky <apovolot at gmail.com> wrote:
> Will one end this at single digit (power = 9) or alternatively instead seek
> multi-consecutive-digit power presentations: such as power of  10, etc. ?

You are right, to any SPN one can always append or prepend any digit
which is already present. So the definition would be more interesting
if this would be forbidden,
or at least, one could consider "primitive SPN's" which are those for
which the property is no more verified if the leading or trailing
digit is removed.
(since this will in many cases still allow insertion of an arbitrary
number of digits already present, maybe it would be better to change
this to : ... for which no duplicate digit can be removed without
destroying the property).

Maximilian



Frank Ryan (American football)
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Frank Ryan
Position(s):
Quarterback 	Jersey #(s):13
Flag of Texas Fort Worth, Texas
Career Information
Year(s): 1958-1970
NFL Draft: 1958 / Round: 5 / Pick: 55
Professional Teams


Career Stats
TD-INT   	  149-111
Yards   	  16,042
QB Rating   	  77.6
Stats at NFL.com
Career Highlights and Awards


Frank Beall Ryan, Ph.D. (born July 12, 1936 in Fort Worth, Texas) is a
retired American football quarterback in the National Football League who
played for the Los Angeles Rams (1958-1961), Cleveland Browns (1962-1968)
and Washington Redskins (1969-1970). Although he led the Browns to their
last National Football League title in 1964, Ryan is best remembered for
being perhaps the only Ph.D. in mathematics to play in the league,
graduation from Rice University (1965) on the dissertation A
Characterization of the Set of Asymptotic Values of a Function Holomorphic
in the Unit Disc, advised by Gerald Mac Lane.[1]
Contents

-----Original Message-----
keynews.tv at skynet.be; seqfan at ext.jussieu.fr; jonathan post; George Hockney;
Bill Drury; Sharon and Joel

Is it just me, or is OEIS still completely offline in every way?

I know that njas has nudged them, but surely AT&T Research labs can't
pretend to have offshored to Bangalore, and blamed the outage on "How
one clumsy ship cut off the web for 75 million people"
http://www.guardian.co.uk/business/2008/feb/01/internationalpersonalfinanceb
usiness.internet

Best,

prof. Jonathan Vos Post

(p.s. for the record, I predict in tomorrow's Superbowl New England
Patriots 38, New York Giants 35). I know that njas is less than
thrilled by the baseball and football sequences extant in OEIS, some
by me, but strangely enough there are scientists and mathematicians
who care.  Trivia question: what National Football League player
actually had a PhD in Mathematics?




Ryan attended graduate school during the first part of his playing career,
and in 1965, he earned his Ph.D. from Rice. His thesis was titled,
"Characterization of the Set of Asymptotic Values of a Function Holomorphic
in the Unit Disc." He started teaching at Rice during his career and, during
his time with the Browns, used his mathematics skills to teach undergraduate
classes three mornings a week at the nearby Case Institute of Technology.

Ryan's second career was fodder for many jokes by sportswriters. Red Smith
wrote that the Browns' offense consisted of a quarterback who understood
Einstein's theory of relativity and 10 teammates who didn't know there was
one. Ryan was somewhat put off by the focus on his academic life, as he
considered himself to be a regular football player.

Soon after his retirement from the Redskins, Ryan remained in the nation's
capital when he was named Director of Information Services for the U.S.
House of Representatives. While there, he helped advance the computer age in
politics by playing an integral role in establishing the body's first
electronic voting system. Ryan resigned that post to become athletic
director at Yale University on March 7, 1977. He served in that position for
10 years before resigning to become the school's Associate vice President
for Institutional Planning. Ryan was a member of the Rice Board of Governors
from 1972 to 1976, and he was recognized as a distinguished alumnus in 1987.
Now retired, he lives in Vermont.

Ryan is not the only Browns quarterback to have a doctorate. Dr. Dave Mays,
DDS, played for the team in 1976 and 1977.

-----Original Message-----
keynews.tv at skynet.be; seqfan at ext.jussieu.fr; jonathan post; George Hockney;
Bill Drury; Sharon and Joel

Is it just me, or is OEIS still completely offline in every way?

I know that njas has nudged them, but surely AT&T Research labs can't
pretend to have offshored to Bangalore, and blamed the outage on "How
one clumsy ship cut off the web for 75 million people"
http://www.guardian.co.uk/business/2008/feb/01/internationalpersonalfinanceb
usiness.internet

Best,

prof. Jonathan Vos Post

(p.s. for the record, I predict in tomorrow's Superbowl New England
Patriots 38, New York Giants 35). I know that njas is less than
thrilled by the baseball and football sequences extant in OEIS, some
by me, but strangely enough there are scientists and mathematicians
who care.  Trivia question: what National Football League player
actually had a PhD in Mathematics?




Dear Seqfans and others, The machine that the OEIS runs on
crashed Friday night at 10:30 pm. We no longer have
computer support on weekends, so it probably won't be
fixed until Monday. I apologize for this.

This machine has crashed on weekends several times in the past year.
I have complained about this lack of support on weekends, but
nothing has has been done.

It might help if you were to write to my department head,
David S. Johnson, dsj at research.att.com, to let him
know that you would like the OEIS to be available on weekends!

Neil