OFFSET
0,2
COMMENTS
Partial sums of A006882.
EXAMPLE
0!!=1
1!!=1 -> 1+1=2
2!!=2 -> 2+2=4
3!!=3 -> 4+3=7
4!!=8 -> 7+8=15
5!!=15 -> 15+15=30
MAPLE
MATHEMATICA
s = 0; lst = {}; Do[s += n!!; AppendTo[lst, s], {n, 0, 26, 1}]; lst (* Zerinvary Lajos, Jul 10 2009 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paolo P. Lava and Giorgio Balzarotti, Jun 14 2007
STATUS
approved