[seqfan] Re: Worry about old sequence, A030077, paths in K_n
masonmilan33 at gmail.com
Sat Apr 2 10:28:01 CEST 2022
The logarithmic scatterplot looks unusual around a(15).
From: Neil Sloane
Sent: 02 April 2022 06:21
To: Sequence Fanatics Discussion list
Subject: [seqfan] Re: Worry about old sequence, A030077, paths in K_n
Maybe the dihedral group was mentioned because this sequence was a simpler
version of a sequence that asked for the *number* of different paths? I
agree it is irrelevant.
Neil J. A. Sloane, Chairman, OEIS Foundation.
Also Visiting Scientist, Math. Dept., Rutgers University,
Email: njasloane at gmail.com
On Fri, Apr 1, 2022 at 11:59 PM Rob Pratt <robert.william.pratt at gmail.com>
> I might be missing something, but it seems like the dihedral group
> business can just be omitted. The number of distinct path *lengths* is the
> same with or without considering group operations.
> > On Apr 1, 2022, at 11:22 PM, Neil Sloane <njasloane at gmail.com> wrote:
> > To Seq Fans, The creator of an interesting sequence, A030077, Daniel
> > Gittelson, submitted 12 terms in 1999, and 4 more terms were added in
> > by a former editor. Daniel G. wrote to me today, expressing doubt about
> > 4 additional terms.
> > He says he interrupted his study of sequences to pursue a medical career,
> > but now that he is retired, he can return to combinatorics.
> > It would be nice if someone could verify the terms! (It is not at all
> > obvious to me how to do this.)
> > Neil Sloane
> > --
> > Seqfan Mailing list - http://list.seqfan.eu/
> Seqfan Mailing list - http://list.seqfan.eu/
Seqfan Mailing list - http://list.seqfan.eu/
More information about the SeqFan