A100043 a(n) = (3*n-1)!.

2, 120, 40320, 39916800, 87178291200, 355687428096000, 2432902008176640000, 25852016738884976640000, 403291461126605635584000000, 8841761993739701954543616000000, 263130836933693530167218012160000000

Offset

1,1

Links

Table of n, a(n) for n=1..11.

Maple

seq( (3*n-1)!, n=1..13);

Prog

(Sage) [stirling_number1(3*n, 1) for n in range(1, 22)] # Zerinvary Lajos, Nov 26 2009

Crossrefs

Sequence in context: A187880 A331500 A024343 * A181760 A290247 A100012

Adjacent sequences: A100040 A100041 A100042 * A100044 A100045 A100046

Keyword

nonn

Author

Jorge Coveiro, Dec 26 2004

Status

approved