A130186 Fourth column (m=3) of triangle A130182.

1, 20, 508, 17400, 788688, 46032768, 3372731136, 303444195840, 32898989030400, 4229445205094400, 635789661109862400, 110396039984094412800, 21901378996153294848000, 4915686113045739601920000

Offset: 0

Author

Wolfdieter Lang Jun 01 2007

Keywords

• nonn
• easy

Comments

See the M. Bruschi et al. reference and the W. Lang link given in A130182.

Crossrefs

Cf. A130185 (third column).

Formula

a(n)= A130186(n+3,3), n>=0.