id:A091751 - OEIS Search Results

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Alternating row sums of array A091747 (generalized Stirling2 array (7,2)).

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1, 29, 2899, 625381, 235735025, 137662456849, 115219635641083, 130892567494940777, 193870813073375001313, 362981045220391075931461, 838251579579056365127865923, 2340586894706172958195272669517, 7772441664087128321443493161452817 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`The first negative term is the 159 digit number a(43)=-2116278545846...33655549.`
	FORMULA	`a(n)=sum(A091747(n, k)(-1)^k, k=2..2n), n>=1.`
	CROSSREFS	`Cf. A091749 (row sums of A091747).` `Sequence in context: A045688 A084223 A138755 this_sequence A055559 A144233 A125074` `Adjacent sequences: A091748 A091749 A091750 this_sequence A091752 A091753 A091754`
	KEYWORD	`sign,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Feb 27 2004`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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