A144283 Third column (m=3) of triangle S2hat(-3) = A144280.

1, 3, 30, 321, 4788, 84483, 1892835, 48681864, 1471877946, 50200415496, 1925842959810, 81617639962320, 3796524406060155, 191934556035324795, 10484757631267725960, 615052198937234606625, 38564916668583937458750, 2573353724722205851069875

Offset: 0

Author

Wolfdieter Lang, Oct 09 2008

Keywords

• nonn
• easy

Crossrefs

Cf. A144280, A144282 (m=2 column).

Formula

a(n) = A144280(n+3,3), n>=0.