A129578 Column 0 of triangle A129577.

1, 1, 2, 5, 16, 62, 275, 1350, 7204, 41345, 253319, 1647434, 11318410, 81820186, 620213998, 4915135856, 40617213320, 349192774319, 3116811173348, 28830194370470, 275902967857298, 2727619197322857, 27818539432598746

Offset

0,3

Links

Table of n, a(n) for n=0..22.

Formula

Equals partial sums (with offset) of main diagonal (A129579) of triangle A129577.

Crossrefs

Cf. A129577, A129579, A129580.

Sequence in context: A369400 A033543 A124531 * A005387 A173469 A138549

Adjacent sequences: A129575 A129576 A129577 * A129579 A129580 A129581

Keyword

nonn

Author

Paul D. Hanna, Apr 24 2007

Status

approved