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 A263230 Triangle read by rows: T(n,k) is the number of graphs with n vertices and k spanning forests. 1
 1, 2, 3, 0, 1, 6, 0, 2, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 10, 0, 6, 2, 1, 0, 0, 3, 1, 0, 1, 1, 0, 0, 0, 2, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 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, 1, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row sums give A000088, n >= 1. LINKS FindStat - Combinatorial Statistic Finder, The number of spanning forests of a graph. EXAMPLE Triangle begins: 1, 2, 3,0,1, 6,0,2,1,0,0,0,1,0,0,0,0,0,0,0,1, ... CROSSREFS Cf. A000088. Sequence in context: A317613 A292628 A163465 * A319665 A004443 A171616 Adjacent sequences:  A263227 A263228 A263229 * A263231 A263232 A263233 KEYWORD nonn,tabf AUTHOR Christian Stump, Oct 15 2015 STATUS approved

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Last modified December 5 17:42 EST 2019. Contains 329768 sequences. (Running on oeis4.)