Away Sep 07 - 17

[Brian L. Galebach]

Actually, it's simpler than that.  It is just 2 interleaved sequences.
Sorry about that.

B.G.

-----Original Message-----
From: Brian L. Galebach [mailto:briang at SEGmail.com]
Sent: Wednesday, September 05, 2001 9:15 AM
To: njas at research.att.com; seqfan at ext.jussieu.fr
Subject: RE: Away Sep 07 - 17


The second sequence is...

2     3     5     5     8     7    11     9    14    11    17    13
20    15    23    17    26    19    29    21    32    23    35    25
38    27    41    29    44    31    47    33    50    35    53    37
56    39    59    41    62    43    65    45    68    47    71    49
74    51    77    53    80    55    83    57    86    59    89    61
92    63    95    65    98    67   101    69   104    71   107    73
110    75   113    77   116    79   119    81   122    83   125    85
128    87   131    89   134    91   137    93   140    95   143    97
146    99   149   101   152   103

A pattern can be seen by looking at the difference between the differences
of adjacent terms.

Brian Galebach

-----Original Message-----
From: N. J. A. Sloane [mailto:njas at research.att.com]
Sent: Wednesday, September 05, 2001 8:47 AM
To: seqfan at ext.jussieu.fr
Subject: Away Sep 07 - 17



I will be away from email during that period.

Apologies for such a trivial message, but otherwise I've found
that people complain if the database isn't updated every few days.

As long as I'm sending this out, let me mention two recent unsolved
problems, both found in school books:  Apparently both of them say
"Find the next term in ..."

%I A063941
%S A063941 17663,25857,1008423
%N A063941 From a 9-th grade algebra book. Explanation unknown.
%D A063941 Mervine Edwards and Siegfried Haenisch, New Views in Algebra, 1:
An Integrated Approach, Educational Design, Inc, 1999 (ISBN #0-87694-578-7);
p. 9, #16.
%K A063941 nonn,unkn,new
%O A063941 0,1
%A A063941 Deborah Florez (deborahf at bcn.net), Sep 01 2001

%I A063914
%S A063914 2,3,5,5,8,7,11
%N A063914 A problem in a 5th grade workbook. Explanation unknown.
%D A063914 D. Dolan, J. Williamson, and M. Muri, Mathematics Activities for
Elementary School Teachers: A Problem Solving Approach, Addison Wesley
Longman, Inc., NY, Fourth Edition (ISBN 0-201-61321-2), Chapter 1, Activity
2, #9.
%K A063914 nonn,unkn,new
%O A063914 1,1
%A A063914 Nancy Shaffer (nancys at rose.net), Aug 30 2001


NJAS