[seqfan] Re: A236019
franktaw at netscape.net
franktaw at netscape.net
Sat Jan 18 23:13:49 CET 2014
I'm not sure how widely this applies, but one sometimes sees the
"greatest prime factor" function as gpf and "least prime factor" as
lpf; other times one sees "largest prime factor" as lpf, and "smallest
prime factor" as "spf" The existence of both usages means that lpf by
itself is ambiguous; thus some people use gpf and spf.
Franklin T. Adams-Watters
-----Original Message-----
From: Kimberling, Clark <ck6 at evansville.edu>
To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
Sent: Sat, Jan 18, 2014 3:35 pm
Subject: [seqfan] Re: A236019
Just a matter of idle curiosity - quite often we see "smallest" instead
of
"least". Since they refer to the relation named "less than", why is
"least" not
standard? There's probably a reason for "smaller" - can someone
explain?
Maybe, somewhere, "<" is called "smaller than"? (Of course, we also
see
"largest" instead of "greatest", referring to the relation > usually
called
"greater than".)
Thanks,
Clark
-----Original Message-----
From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of jnthn
stdhr
Sent: Saturday, January 18, 2014 3:09 PM
To: Sequence Fanatics Discussion list
Subject: [seqfan] A236019
Hi, all.
I am proposing the new sequence A236019, "Smallest number containing at
least n
partitions that contain at least n primes." The sequence begins:
0, 2, 5, 8, 13, 15.
I am currently limited to using a cell phone as my computer. Would
someone be
interested in extending this sequence?
I have also submitted A235945, "Number of partitions of n containing at
least
one prime.", which fills the gap, so to speak, between A000041, "Number
of
partitions of n." and A000607, "Number of partitions of n into prime
parts".
This also needs extending.
Thanks,
Jonathan
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