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 A185216 Number of disconnected regular simple graphs on n vertices with girth at least 6. 10
 0, 0, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 2, 4, 3, 5, 4, 7, 6, 9, 9, 12, 12, 17, 17, 22, 24, 31, 32, 42, 44, 60, 60, 109, 80, 529, 107, 8246, 143, 191422, 188, 4856141, 248, 127938143, 326, 3482858640, 424, 98176518751, 552 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,5 LINKS Jason Kimberley, Disconnected regular graphs with girth at least 6 CROSSREFS Disconnected k-regular simple graphs with girth at least 6: this sequence (all k), A185206 (triangle); A185226 (k=2), A185236 (k=3), A185246 (k=4). Disconnected regular graphs with girth at least g: A068932 (g=3), A185214 (g=4), A185215 (g=5), this sequence (g=6),  A185217 (g=7). Sequence in context: A161057 A161261 A161286 * A247976 A280986 A344773 Adjacent sequences:  A185213 A185214 A185215 * A185217 A185218 A185219 KEYWORD nonn,hard AUTHOR Jason Kimberley, Jun 21 2012 STATUS approved

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Last modified July 27 05:26 EDT 2021. Contains 346305 sequences. (Running on oeis4.)