id:A122802 - OEIS Search Results

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Number of labeled bipartite graphs on n vertices with no isolated vertices.

+0
2

1, 0, 1, 6, 29, 510, 5032, 161406, 3294405, 194342910, 7934652356, 881008805886, 71275547085536, 15178191426486270, 2434250064518832302, 1008694542117649154046, 321680912414994434144165 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`a(2n+1) = A052332(2n+1) a(2n) = A052332(2n) - A122801(n) (for n>0)`
	CROSSREFS	`Cf. A122801, A052332, A001831, A002031, A047863.` `Sequence in context: A020036 A054748 A143563 this_sequence A051685 A165734 A123624` `Adjacent sequences: A122799 A122800 A122801 this_sequence A122803 A122804 A122805`
	KEYWORD	`nonn`
	AUTHOR	`Max Alekseyev (maxale(AT)gmail.com), Sep 11 2006`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

AT&T Labs Research