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A090437 Alternating row sums of array A078740 ((3,2)-Stirling2). +0
2
1, 1, -17, -299, 1921, 451621, 23016631, -138672407, -208026131039, -31455532865879, -2214855733827329, 358045039222582141, 197933737480453452193, 51028310360637930765901, 6769736050165112232649351, -1644881699523140953828119599 (list; graph; listen)
OFFSET

1,3

FORMULA

a(n)= sum(((-1)^k)*A078740(n, k), k=2..2*n), n>=1.

CROSSREFS

Sequence in context: A001026 A041546 A083453 this_sequence A007805 A129992 A142428

Adjacent sequences: A090434 A090435 A090436 this_sequence A090438 A090439 A090440

KEYWORD

sign,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Dec 23 2003

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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