id:A134137 - OEIS Search Results

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Alternating row sums of triangle A049352 (S1p(4)).

+0
2

1, 3, 9, 15, -159, -3021, -36903, -381249, -3212415, -12995901, 315857961, 12457515663, 304888863969, 6280156107315, 113710631625081, 1717208752084479, 15528594345353217, -265033870991715069, -22048996644203788215 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=sum(A049352(n,m)(-1)^(m-1),m=1..n), n>=1.` `E.g.f.: 1-exp(-x(3-3x+x^2)/(3(1-x)^3)). Cf. e.g.f. first column of A049352.`
	CROSSREFS	`Sequence in context: A038547 A083556 A015664 this_sequence A076362 A070066 A020967` `Adjacent sequences: A134134 A134135 A134136 this_sequence A134138 A134139 A134140`
	KEYWORD	`sign,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de) Oct 12 2007`

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Last modified December 4 21:35 EST 2008. Contains 151309 sequences.

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