A165814 a(n)=n*(a(n-1)-3), a(0)=1.

1, -2, -10, -39, -168, -855, -5148, -36057, -288480, -2596347, -25963500, -285598533, -3427182432, -44553371655, -623747203212, -9356208048225, -149699328771648, -2544888589118067, -45807994604125260

Offset: 0

Author

Philippe Deléham, Sep 28 2009

Keywords

• sign

Links

• G. C. Greubel, Table of n, a(n) for n = 0..250

Programs

Mathematica

FoldList[#1*#2 - 3 #2 &, 1, Range[25]] (* G. C. Greubel, Apr 09 2016 *)