A126154 a(n) = Sum_{k=0..n} C(2n,k)*A126150(n,k).

1, 10, 420, 38760, 6274320, 1574566560, 566087814720, 276000683679360, 175277074975269120, 140576092830146972160, 138951226585459200107520, 165951785120565606919464960, 235593066998837613695124049920

Offset

0,2

Links

Table of n, a(n) for n=0..12.

Example

a(1) = 1*(1) + 2*(4) + 1*(1) = 10;
a(2) = 1*(6) + 4*(24) + 6*(36) + 4*(24) + 1*(6) = 120;
a(3) = 1*(96) + 6*(384) + 15*(636) + 20*(744) + 15*(636) + 6*(384) + 1*(96) = 38760.

Crossrefs

Cf. A126150.

Sequence in context: A364118 A085000 A248553 * A199835 A350565 A001327

Adjacent sequences: A126151 A126152 A126153 * A126155 A126156 A126157

Keyword

nonn

Author

Paul D. Hanna, Dec 20 2006

Status

approved