id:A055192 - OEIS Search Results

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Number of bipartite graphs with n vertices, no isolated vertices and a distinguished bipartite block, up to isomorphism.

+0
6

1, 2, 5, 12, 35, 108, 393, 1666, 8543, 54190, 436740, 4565450, 62930604, 1156277748, 28509174012, 946786816168, 42448800498744, 2573207315483554, 211180300735118954, 23490473719472829824, 3545759835559406756008 (list; graph; listen)

	OFFSET	`2,2`
	CROSSREFS	`Equals second differences of A049312. Cf. A024206, A055609, A055082-A055084.` `Row sums of A056152 and also of A122083.` `Sequence in context: A036357 A000104 A000105 this_sequence A108555 A032203 A094717` `Adjacent sequences: A055189 A055190 A055191 this_sequence A055193 A055194 A055195`
	KEYWORD	`nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 18 2000`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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