A165655 -id:A165655 - cp's OEIS frontend

A185293 Number of disconnected 9-regular graphs with 2n nodes.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 9, 88238, 113315027550, 281342192047999912, 1251394783006077652496450, 9854615127100313024544239975139, 134283364935428822131144679491097123786

Offset: 0

Jason Kimberley, Jan 26 2012

Jason Kimberley, Index of sequences counting disconnected k-regular simple graphs with girth at least g

9-regular simple graphs: A014381 (connected), this sequence (disconnected).

Disconnected regular simple graphs: A068932 (any degree), A068933 (triangular array), specified degree k: A157928 (k=0), A157928 (k=1), A165652 (k=2), A165653 (k=3), A033483 (k=4), A165655 (k=5), A165656 (k=6), A165877 (k=7), A165878 (k=8), this sequence (k=9), A185203 (k=10), A185213 (k=11).

a(14)-a(17) from Andrew Howroyd, May 20 2020

A185053 Number of disconnected 5-regular simple graphs on 2n vertices with girth exactly 3.

Original entry on oeis.org

0, 0, 0, 0, 0, 0, 1, 3, 66, 8029, 3484759, 2595985769, 2815099031409

Offset: 0

Jason Kimberley, Mar 10 2012

Jason Kimberley, Index of sequences counting disconnected k-regular simple graphs with girth exactly g

Disconnected k-regular simple graphs with girth exactly 3: A210713 (any k), A210703 (triangle); for fixed k: A185033 (k=3), A185043 (k=4), this sequence (k=5), A185063 (k=6).

a(n) = A165655(n) - A185254(n).

cp's OEIS Frontend

A185293 Number of disconnected 9-regular graphs with 2n nodes.

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