id:A126152 - OEIS Search Results

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Main diagonal of symmetric triangle A126150: a(n) = A126150(n,n).

+0
5

1, 4, 36, 744, 28536, 1736064, 152914176, 18372559104, 2885671339776, 573765893121024, 140835811776316416, 41820352964911908864, 14774712204104658671616, 6124078747943873540112384 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=Sum_{k, 0<=k<=n}A130847(n,k)*3^k. - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Jul 22 2007`
	CROSSREFS	`Cf. A126150; A126151 (column 0), A126153 (diagonal).` `Sequence in context: A163887 A156630 A145565 this_sequence A009446 A134052 A127901` `Adjacent sequences: A126149 A126150 A126151 this_sequence A126153 A126154 A126155`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Dec 19 2006`

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

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