A092087 Alternating row sums of triangle A092083 (s2(7)).

1, 20, 505, 14090, 415654, 12706406, 398165665, 12706132610, 411175121230, 13453601230544, 444162996339226, 14772945441872060, 494426375286105640, 16635957551869533770, 562327513989662942929, 19084061209362462745826

Offset

0,2

Links

Table of n, a(n) for n=0..15.

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: A118552 A270578 A255492 * A008270 A130186 A130033

Adjacent sequences: A092084 A092085 A092086 * A092088 A092089 A092090

Keyword

nonn,easy

Author

Wolfdieter Lang, Mar 19 2004

Status

approved