A126468 - OEIS

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A126468

Column 2 of triangle A126465.

1, 1, 10, 255, 11935, 879571, 93365328, 13464554610, 2531141851260, 601339958510170, 176255315943299736, 62514948119465302825, 26407795709641456484010, 13109371824722841349352160 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	PROG	`(PARI) {a(n)=local(M=matrix(n+3, n+3, r, c, if(r>=c, binomial((r-1)r(r+1)/3!-(c-1)c(c+1)/3!, r-c))), N=matrix(n+3, n+3, r, c, if(r>=c, binomial((r-1)r(r+1)/3!-(c-1)c(c+1)/3!+1, r-c)))); (N*M^-1)[n+3, 3]}`
	CROSSREFS	`Cf. A126465, A126466, A126467; A126469 (row sums).` `Sequence in context: A095983 A059166 A100743 * A024293 A120268 A001824` `Adjacent sequences: A126465 A126466 A126467 * A126469 A126470 A126471`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Dec 27 2006`

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Last modified February 14 18:47 EST 2012. Contains 205663 sequences.