A144277 Second column (m=2) of triangle S2hat(-2) = A144275.

1, 2, 14, 100, 1140, 14880, 249280, 4801280, 108574400, 2767072000, 79286592000, 2508856627200, 87115395136000, 3287694620672000, 134073047499776000, 5872147278807040000, 274939690654024704000, 13701683362561818624000, 724128149433185136640000

Offset: 0

Author

Wolfdieter Lang, Oct 09 2008

Keywords

• nonn
• easy

Crossrefs

Cf. A144275, A008544 (m=1 column), A144278 (m=3 column).

Formula

a(n) = A144275(n+2,2), n>=0.