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

0,2

Links

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

Mathematica

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

Crossrefs

Sequence in context: A120949 A186097 A295521 * A151311 A151312 A253590

Adjacent sequences: A165811 A165812 A165813 * A165815 A165816 A165817

Keyword

sign

Author

Philippe Deléham, Sep 28 2009

Status

approved