Good idea! But before I join seqfans and post my question, I'd like to make sure that the question hasn't already been posed and answered there. I went to the seqfans site, but didn't see anything like an FAQ or a comprehensive index of subject-lines. Are any math-funsters also seqfans, and if so, can anyone comment on whether my question is a new one? (Seems unlikely to me, the more I think about it.) Jim Propp On Mon, Jan 6, 2014 at 12:19 AM, W. Edwin Clark <wclark@mail.usf.edu> wrote:
Jim,
You might have more success posting your question to the SeqFan mailing list. You can join at http://list.seqfan.eu/cgi-bin/mailman/listinfo/seqfan. There sequence fans over there that may jump at your challenge.
--Edwin
On Mon, Jan 6, 2014 at 12:08 AM, James Propp <jamespropp@gmail.com> wrote:
I didn't know about Sloane's gap. Very interesting!
I was wrong: the first number that is less common in the OEIS than its successor is 14, not 11.
I don't know what the situation is if one restricts to increasing sequences; can anyone look into this?
Jim Propp
On Sunday, January 5, 2014, David Makin wrote:
Not sure about sorting all numbers in terms of interest - but clearly the *most* interesting have to be 0 and 1 ;)
On 5 Jan 2014, at 23:07, W. Edwin Clark wrote:
A place to start with such investigations is perhaps the famous paper on "Sloane's gap" ( http://arxiv.org/pdf/1101.4470.pdf ) which discusses the distribution of N(n) = the number of occurrences of n in the OEIS.
On Sun, Jan 5, 2014 at 5:46 PM, James Propp <jamespropp@gmail.com <javascript:;>> wrote:
What is the smallest value of n such that n+1 appears in more of the increasing sequences in the OEIS than n does?
The reason I want to restrict attention to increasing sequences in the OEIS is that these correspond to interesting subsets of the positive integers. I suppose if anyone wants to answer my question with the word "increasing" omitted, I'd be interested in that too. Conjecture: The n that you get is the same for both versions of my question. Refined conjecture: in both cases, n is 11.
Jim Propp
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