A091750 - OEIS

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A091750

Alternating row sums of array A091746 (generalized Stirling2 array (6,2)).

1, 19, 1171, 151681, 33743041, 11461272931, 5499378001699, 3524209981309921, 2887597622445729121, 2916075074262560119891, 3507033649107862877516371, 4836904652902464306386484769, 7251193844710136332044143616481 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`The first negative term is the 41 digit number a(16)=-42686874251433290891296448926053802610879.`
	FORMULA	`a(n)=sum(A091746(n, k)(-1)^k, k=2..2n), n>=1.`
	CROSSREFS	`Cf. A091748 (row sums of A091746).` `Sequence in context: A195214 A098635 A063442 * A078955 A107673 A130037` `Adjacent sequences: A091747 A091748 A091749 * A091751 A091752 A091753`
	KEYWORD	`sign,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Feb 27 2004`

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Last modified February 14 01:35 EST 2012. Contains 205567 sequences.