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 A185315 Number of, not necessarily connected, regular simple graphs on n vertices with girth at least 5. 11
 1, 1, 2, 1, 2, 2, 3, 2, 3, 2, 5, 3, 7, 4, 15, 6, 57, 8, 466, 12, 5801, 24, 91091, 3939, 1744378, 4132022, 163639295, 4018022192, 119026596500 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS FORMULA a(n) = A186725(n) + A185215(n). CROSSREFS Not necessarily connected k-regular simple graphs with girth at least 5: this sequence (any k), A185305 (triangle); specified degree k: A185325 (k=2), A185335 (k=3). Not necessarily connected regular simple graphs with girth at least g: A005176 (g=3), A185314 (g=4), this sequence (g=5), A185316 (g=6), A185317 (g=7), A185318 (g=8), A185319 (g=9). Sequence in context: A143966 A260617 A178695 * A232548 A029363 A304708 Adjacent sequences:  A185312 A185313 A185314 * A185316 A185317 A185318 KEYWORD nonn,more,hard AUTHOR Jason Kimberley, Dec 12 2012 STATUS approved

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Last modified February 20 17:04 EST 2020. Contains 332080 sequences. (Running on oeis4.)