A134282 Alternating row sums of triangle A134280 (S2(6)').

1, 5, 61, 959, 20821, 545279, 17128201, 620355263, 25594230937, 1181868481463, 60478614651577, 3395069184089687, 207524762064350473, 13718967902774331287, 975392219493426602569, 74215525935813198093815

Offset: 1

Author

Wolfdieter Lang, Nov 13 2007

Keywords

• nonn
• easy

Crossrefs

Cf. A134281 (row sums of triangle A134280).

Formula

a(n) = Sum_{m=1..n} A134280(n,m)*(-1)^(m-1), n>=1.