id:A136636 - OEIS Search Results

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a(n) = n * C(2*3^(n-1), n) for n>=1.

+0
4

2, 30, 2448, 1265004, 4368213360, 106458751541142, 19173684851378353296, 26413015283743616538733008, 285290979402099025600644272168880, 24601033850235942230699563821233785600080 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Equals column 1 of triangle A136635.`
	PROGRAM	`(PARI) {a(n)=nbinomial(23^(n-1), n)}`
	CROSSREFS	`Cf. A136635 (triangle), A014070 (main diagonal), A136393 (column 0), A136637 (row sums), A136638 (antidiagonal sums).` `Sequence in context: A132104 A099800 A099929 this_sequence A030249 A000187 A053851` `Adjacent sequences: A136633 A136634 A136635 this_sequence A136637 A136638 A136639`
	KEYWORD	`nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu) and Paul D. Hanna (pauldhanna(AT)juno.com), Jan 15 2008`

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Last modified December 3 10:07 EST 2008. Contains 151162 sequences.

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