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A185234
Number of disconnected 3-regular simple graphs on 2n vertices with girth at least 4.
13
0, 0, 0, 0, 0, 0, 1, 2, 9, 35, 177, 1153, 10341, 120523, 1702432, 27507351, 492377298, 9600913017, 201990426697, 4555849947783
OFFSET
0,8
CROSSREFS
Disconnected k-regular simple graphs with girth at least 4: A185214 (any k), A185204 (triangle); specified degree k: A185224 (k=2), this sequence (k=3), A185244 (k=4), A185254 (k=5), A185264 (k=6), A185274 (k=7), A185284 (k=8), A185294 (k=9).
Sequence in context: A150965 A150966 A185034 * A357202 A306791 A175231
KEYWORD
nonn,hard,more
AUTHOR
Jason Kimberley, Feb 22 2011
STATUS
approved