A145359 Second column (m=2) of triangle A145357 (S1hat(6)).

1, 6, 78, 588, 6804, 62496, 753984, 8273664, 109118016, 1408700160, 20697223680, 309818234880, 5100265336320, 87215844925440, 1605019401216000, 30898776106598400, 631358784683827200, 13503510009903513600, 303781522335363072000, 7137966147222822912000

Offset

1,2

Links

Table of n, a(n) for n=1..20.

Formula

a(n) = A145357(n+2,2), n>=0.

Crossrefs

Cf. A145357, A001725 (first column), A145360 (third column).

Sequence in context: A231248 A160240 A069669 * A087600 A306096 A370714

Adjacent sequences: A145356 A145357 A145358 * A145360 A145361 A145362

Keyword

nonn,easy

Author

Wolfdieter Lang, Oct 17 2008

Extensions

Changed offset from 0 to 1 by Wolfdieter Lang, Nov 17 2008

Status

approved