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

1,2

Links

Table of n, a(n) for n=1..18.

Formula

a(n)=sum(A134146(n,m)*(-1)^(m-1),m=1..n), n>=1.

Crossrefs

Cf. A134147 (row sums of A134146).

Sequence in context: A079752 A156018 A285795 * A164035 A074619 A162275

Adjacent sequences: A134145 A134146 A134147 * A134149 A134150 A134151

Keyword

nonn,easy

Author

Wolfdieter Lang Nov 13 2007

Status

approved