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

Author

Wolfdieter Lang, Mar 19 2004

Keywords

• nonn
• easy

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)).