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Search: id:A092087
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A092087 Alternating row sums of triangle A092083 (s2(7)). +0
3
1, 20, 505, 14090, 415654, 12706406, 398165665, 12706132610, 411175121230, 13453601230544, 444162996339226, 14772945441872060, 494426375286105640, 16635957551869533770, 562327513989662942929, 19084061209362462745826 (list; graph; listen)
OFFSET

0,2

FORMULA

a(n)= -sum(A092083(n, m)*(-1)^m, m=1..n), n>=1.

G.f.: (-1 +(1-36*x)^(-1/6))/(5+(1-36*x)^(-1/6)).

CROSSREFS

Sequence in context: A159753 A000827 A118552 this_sequence A008270 A130186 A130033

Adjacent sequences: A092084 A092085 A092086 this_sequence A092088 A092089 A092090

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Mar 19 2004

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.


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