A134148 Alternating row sums of triangle A134146.

1, 2, 13, 83, 817, 9065, 121795, 1850384, 31964686, 612859952, 12980965588, 300358150373, 7548024748057, 204624140789585, 5954693801179750, 185127523366125449, 6124428454164394921, 214815152433502078607

Offset: 1

Author

Wolfdieter Lang, Nov 13 2007

Keywords

• nonn
• easy

Crossrefs

Cf. A134147 (row sums of A134146).

Formula

a(n) = Sum_{m=1..n} A134146(n,m)*(-1)^(m-1), n>=1.