

A165655


Number of disconnected 5regular (quintic) graphs on 2n vertices.


12



0, 0, 0, 0, 0, 0, 1, 3, 66, 8029, 3484760, 2595985770, 2815099031417, 4230059694039460, 8529853839173455678, 22496718465713456081402, 75951258300080722467845995, 322269241532759484921710401976
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OFFSET

0,8


LINKS



FORMULA



CROSSREFS

5regular simple graphs: A006821 (connected), this sequence (disconnected), A165626 (not necessarily connected).
Disconnected regular simple graphs: A068932 (any degree), A068933 (triangular array), specified degree k: A165652 (k=2), A165653 (k=3), A033483 (k=4), this sequence (k=5), A165656 (k=6), A165877 (k=7), A165878 (k=8), A185293 (k=9), A185203 (k=10), A185213 (k=11).


KEYWORD

nonn,hard,more


AUTHOR



EXTENSIONS



STATUS

approved



