id:A113332 - OEIS Search Results

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a(n) = A113129(2*n+2,n+2) for n>=0.

+0
2

2, 10, 84, 930, 12452, 193284, 3393480, 66310914, 1425717060, 33435425100, 849342514200, 23235509430900, 681196753501992, 21309727555222600, 708630046700665104, 24964702239372310338, 928914855447585334020 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Related to A000699, the number of irreducible diagrams with 2n nodes.`
	FORMULA	`a(n) = A000699(n+1)(2n+3)(n+2)/(3(n+1)).`
	CROSSREFS	`Cf. A113129, A000699.` `Sequence in context: A121194 A121516 A024491 this_sequence A107863 A065866 A156466` `Adjacent sequences: A113329 A113330 A113331 this_sequence A113333 A113334 A113335`
	KEYWORD	`nonn`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr) and Paul D. Hanna (pauldhanna(AT)juno.com), Nov 03 2005`

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

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