id:A116072 - OEIS Search Results

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Central terms of triangle A116071, which equals Pascal's triangle to the matrix power of Pascal's triangle.

+0
2

1, 2, 18, 200, 2870, 49392, 976668, 21697104, 532727910, 14275220960, 413469332276, 12845983030608, 425442421627132, 14941814934855200, 554044899080129400, 21608731448473756320, 883563752144886420870 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) = (n+1)A000108(n)A000248(n).`
	PROGRAM	`(PARI) {a(n)=local(X=x+xO(x^(2n)), Y=y+yO(y^n)); (2n)!polcoeff(polcoeff(exp(X(Y+exp(X))), 2*n, x), n, y)}`
	CROSSREFS	`Cf. A000248, A080108, A116071.` `Sequence in context: A138413 A066274 A052623 this_sequence A092882 A123855 A121407` `Adjacent sequences: A116069 A116070 A116071 this_sequence A116073 A116074 A116075`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Feb 03 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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