A185182 a(n) = 2^n*A185181(n).

0, 2, 4, 56, 1056, 25152, 728192, 24242048

Offset

0,2

Links

Table of n, a(n) for n=0..7.

Jean-Christophe Novelli and Jean-Yves Thibon, Free quasi-symmetric functions and descent algebras for wreath products, and noncommutative multi-symmetric functions (2008); arXiv:0806.3682. Discrete Math. 310 (2010), no. 24, 3584-3606, see Eq. (123).

Crossrefs

Cf. A185181.

Sequence in context: A318642 A230884 A362735 * A098626 A012370 A012366

Adjacent sequences: A185179 A185180 A185181 * A185183 A185184 A185185

Keyword

nonn,more

Author

N. J. A. Sloane, Jan 23 2012

Status

approved