A134272 Alternating row sums of triangle A134151.

1, 3, 25, 239, 3289, 53111, 1031497, 22906903, 578734697, 16306214743, 508360540457, 17354157283287, 644314385719593, 25842490815894231, 1113789927340848937, 51332921853722842327, 2519491205735072674601

Offset

1,2

Links

Table of n, a(n) for n=1..17.

Formula

a(n) = Sum_{m=1..n} A134151(n,m)*(-1)^(m-1), n>=1.

Crossrefs

Cf. A134152 (row sums of triangle A134151).

Sequence in context: A370280 A367786 A332468 * A335117 A346539 A350224

Adjacent sequences: A134269 A134270 A134271 * A134273 A134274 A134275

Keyword

nonn,easy

Author

Wolfdieter Lang, Nov 13 2007

Status

approved