|
%I #14 May 17 2016 16:31:13
%S 1,0,-2,-9,-40,-205,-1236,-8659,-69280,-623529,-6235300,-68588311,
%T -823059744,-10699776685,-149796873604,-2246953104075,-35951249665216,
%U -611171244308689,-11001082397556420,-209020565553571999
%N a(0)=1, a(n) = n*(a(n-1)-1) for n>0.
%H G. C. Greubel, <a href="/A166554/b166554.txt">Table of n, a(n) for n = 0..500</a>
%F a(n) = -A038156(n) for n>0.
%F a(n) = n! - floor(e*n!) + 1, n>0. - _Gary Detlefs_, Jun 06 2010
%F a(n) = (n+2)*a(n-1) - (2*n-1)*a(n-2) + (n-2)*a(n-3). - _R. J. Mathar_, Jul 28 2013
%t RecurrenceTable[{a[0]==1,a[n]==n(a[n-1]-1)},a[n],{n,20}] (* _Harvey P. Dale_, Jul 25 2011 *)
%Y Cf. A000142, A165793, A165814.
%K sign
%O 0,3
%A _Philippe Deléham_, Oct 16 2009
|
