A089431 Even-indexed terms of A089423.

1, 2, 12, 120, 840, 5040, 55440, 720720, 720720, 24504480, 465585120

Offset

0,2

Links

Table of n, a(n) for n=0..10.

Crossrefs

Sequence in context: A295864 A255506 A095717 * A119701 A362457 A364422

Adjacent sequences: A089428 A089429 A089430 * A089432 A089433 A089434

Keyword

nonn

Author

Antti Karttunen, Nov 29 2003

Status

approved