A036723 G.f. satisfies A(x) = 1 + x*cycle_index(G,A(x)) where G = cyclic group of order 2 generated by (1,2)(3,4).

1, 1, 2, 8, 30, 135, 622, 3032, 15134, 77506, 403780, 2135588, 11430910, 61815916, 337193808, 1853183376, 10251612034, 57037706410, 318965425380, 1791842232154, 10107161112356, 57221612791015, 325045726349906, 1852055247196164

Offset

0,3

Links

Table of n, a(n) for n=0..23.

Crossrefs

Cf. A036717-A036722.

Sequence in context: A150783 A150784 A150785 * A150786 A150787 A150788

Adjacent sequences: A036720 A036721 A036722 * A036724 A036725 A036726

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved