id:A134138 - OEIS Search Results

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Alternating row sums of triangle A046089 (S1p(3)).

+0
2

1, 2, 4, 2, -74, -916, -8672, -73564, -542852, -2595016, 18348496, 906083672, 21021502984, 406255974032, 7157641045696, 116383645516784, 1681549859135248, 18311613681506336, -3332917116147392 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=sum(A046089(n,m)(-1)^(m-1),m=1..n), n>=1.` `E.g.f.:1-exp(-x(2-x)/(2*(1-x)^2)). Cf. e.g.f. first column of A046089.`
	CROSSREFS	`Cf. A049377 (row sums of A046089).` `Sequence in context: A130172 A029589 A121819 this_sequence A048644 A106137 A127651` `Adjacent sequences: A134135 A134136 A134137 this_sequence A134139 A134140 A134141`
	KEYWORD	`sign,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de) Oct 12 2007`

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

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