[seqfan] Re: A003757
joshua.zucker at gmail.com
Tue Dec 16 20:53:09 CET 2008
Using my entirely too limited understanding and research skills, I found
and downloading the PDF linked there, I found a paper explaining the
techniques and notation ... but with no definition of D_4.
I'm guessing it's the graph of the dihedral group on four elements,
that is, a "cube" with 8 vertices and 12 edges? I don't understand
the counting problem well enough to check in the small cases whether
that guess makes any sense.
On Tue, Dec 16, 2008 at 10:57 AM, Richard Guy <rkg at cpsc.ucalgary.ca> wrote:
> Help! In A003757, can someone tell me what D_4 is?
> Thanks! R.
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