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Search: id:A134831
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A134831 Alternating row sums of triangle A134830. +0
2
1, 1, 2, 0, 12, -26, 312, -1338, 16684, -104994, 1463904, -12138218, 190104132, -1956240066, 34206491416, -420374124426, 8140714373532, -116318340148898, 2474986205007504, -40312051604277354 (list; graph; listen)
OFFSET

0,3

FORMULA

a(n)=sum(A134830(n,k)*(-1)^(k-1),k=1..n+1), n>=0.

CROSSREFS

Adjacent sequences: A134828 A134829 A134830 this_sequence A134832 A134833 A134834

Sequence in context: A104014 A002929 A112261 this_sequence A074001 A013316 A013310

KEYWORD

sign,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de) Jan 21 2008

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Last modified January 8 02:43 EST 2009. Contains 152824 sequences.


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