id:A135862 - OEIS Search Results

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a(n) = C(n*(n+1),n)/(n^2+1).

+0
3

1, 1, 3, 22, 285, 5481, 141778, 4638348, 184138713, 8612835715, 464333035881, 28368973183200, 1938034271677595, 146439782923866810, 12129248258088578100, 1092975597259714940696, 106463932364272178140209 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n) = A135860(n)/(n^2+1).`
	PROGRAM	`(PARI) a(n)=binomial(n*(n+1), n)/(n^2+1)`
	CROSSREFS	`Cf. A135860, A135861.` `Adjacent sequences: A135859 A135860 A135861 this_sequence A135863 A135864 A135865` `Sequence in context: A052892 A074706 A141360 this_sequence A122778 A108991 A119390`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Dec 02 2007`

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Last modified October 6 15:49 EDT 2008. Contains 144667 sequences.

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