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A185237
Number of disconnected 3-regular simple graphs on 2n vertices with girth at least 7.
5
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 27, 609, 32237, 1885410, 101214662, 5025320937
OFFSET
0,26
CROSSREFS
Disconnected k-regular simple graphs with girth at least 7: A185217 (all k), A185207 (triangle); A185227 (k=2), this sequence (k=3).
Sequence in context: A222844 A219345 A185037 * A099084 A085656 A113100
KEYWORD
nonn,hard,more
AUTHOR
Jason Kimberley, Feb 22 2011
STATUS
approved