A152394 Column 2 of triangle A152391.

1, 3, 8, 40, 216, 1386, 9552, 71820, 571440, 4815778, 42465144, 391058720, 3738272328, 37015339410, 378307524768, 3983307781956, 43109512918560, 478808036794306, 5448659044584680, 63446989372749528, 755057167559816440

Offset

0,2

Links

Table of n, a(n) for n=0..20.

Crossrefs

Cf. A152391; columns: A152392, A152393; A152395.

Sequence in context: A110561 A107991 A007175 * A168468 A330527 A224246

Adjacent sequences: A152391 A152392 A152393 * A152395 A152396 A152397

Keyword

nonn

Author

Paul D. Hanna, Dec 11 2008

Status

approved