A123307 - OEIS

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A123307

Column 1 of triangle A123305.

1, 2, 8, 44, 312, 2776, 30312, 397728, 6151768, 110306160, 2260463464, 52304514912, 1352534122104, 38742215685776, 1219910431007656, 41945588389187712, 1565744883592488856, 63123204175617586000 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Triangle T=A123305 is defined by: (column k of T) = (k+1)*(column k of T^2) shifted to have an initial '1'; thus this sequence shifted left equals twice column 1 of T^2 (matrix square of A123305).`
	CROSSREFS	`Cf. A123305; A123306, A123308, A123309; A123310, A123311.` `Sequence in context: A172109 A005649 A005363 * A190818 A126101 A157994` `Adjacent sequences: A123304 A123305 A123306 * A123308 A123309 A123310`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Sep 24 2006`

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Last modified February 17 14:45 EST 2012. Contains 206046 sequences.