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 A185015 Characteristic function of 5. 16
 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,6 COMMENTS Number of connected 2-regular (simple) graphs with girth exactly 5. The Euler transformation of this sequence is A079998. LINKS FORMULA a(n) = A185115(n) - A185116(n). CROSSREFS Characteristic function of g: A000007 (g=0), A063524 (g=1), A185012 (g=2), A185013 (g=3), A185014 (g=4), this sequence (g=5), A185016 (g=6), A185017 (g=7). Sequence in context: A057427 A178334 A185016 * A185014 A185013 A185012 Adjacent sequences:  A185012 A185013 A185014 * A185016 A185017 A185018 KEYWORD nonn,easy AUTHOR Jason Kimberley, Sep 30 2011 STATUS approved

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Last modified March 28 07:59 EDT 2020. Contains 333079 sequences. (Running on oeis4.)