[seqfan] Re: Worry about old sequence, A030077, paths in K_n

Rob Pratt robert.william.pratt at gmail.com
Sat Apr 2 05:59:19 CEST 2022

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 2007
> by a former editor. Daniel G. wrote to me today, expressing doubt about the
> 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
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