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

Author

Wolfdieter Lang, Nov 13 2007

Keywords

• nonn
• easy

Crossrefs

Cf. A134152 (row sums of triangle A134151).

Formula

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