A212671 A001037(n)!.

1, 2, 1, 2, 6, 720, 362880, 6402373705728000, 265252859812191058636308480000000, 710998587804863451854045647463724949736497978881168458687447040000000000000

Offset

0,2

Links

Table of n, a(n) for n=0..9.

Crossrefs

Cf. A001037.

Sequence in context: A302190 A114572 A052621 * A131057 A051852 A054495

Adjacent sequences: A212668 A212669 A212670 * A212672 A212673 A212674

Keyword

nonn

Author

N. J. A. Sloane, May 23 2012

Status

approved