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 A185033 Number of disconnected 3-regular simple graphs on 2n vertices with girth exactly 3. 10
 0, 0, 0, 0, 1, 2, 8, 29, 138, 774, 5678, 53324, 622716, 8604351, 135344959, 2363662004, 45134533117, 933058713014, 20735549517852, 492653820710746 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,6 LINKS FORMULA a(n) = A165653(n) - A185234(n). CROSSREFS Disconnected k-regular simple graphs with girth exactly 3: A210713 (any k), A210703 (triangle); for fixed k: this sequence (k=3), A185043 (k=4), A185053 (k=5), A185063 (k=6). Disconnected 3-regular simple graphs with girth exactly g: this sequence (g=3), A185034 (g=4), A185035 (g=5), A185036 (g=6), A185037 (g=7). Sequence in context: A150756 A150757 A150758 * A287045 A009419 A000162 Adjacent sequences:  A185030 A185031 A185032 * A185034 A185035 A185036 KEYWORD nonn,more,hard AUTHOR Jason Kimberley, Feb 29 2012 STATUS approved

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Last modified May 23 12:38 EDT 2019. Contains 323514 sequences. (Running on oeis4.)