id:A029941 - OEIS Search Results

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Number of symmetric types of (4,2n)-hypergraphs under action of complementing group C(4,2).

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1, 15, 50, 225, 590, 1485, 3130, 6435, 11931, 21450, 36220, 59670, 94140, 145350, 217500, 319770, 458981, 648945, 900350, 1233375, 1663850, 2220075, 2924870, 3817125, 4928511, 6310980, 8007640, 10086780, 12605560, 15651900, 19300440 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: (30/(1-x^2)^8-70/(1-x^4)^4+120/(1-x^8)^2-64/(1-x^16))/16.`
	CROSSREFS	`Cf. A051502.` `Sequence in context: A020257 A103777 A134742 this_sequence A075928 A020214 A127643` `Adjacent sequences: A029938 A029939 A029940 this_sequence A029942 A029943 A029944`
	KEYWORD	`nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)eunet.rs), Jul 13 2000`
	EXTENSIONS	`More terms from James A. Sellers (sellersj(AT)math.psu.edu), Aug 08 2000`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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