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A036724
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)(5,6).
1
1, 1, 3, 18, 109, 768, 5652, 43618, 346353, 2816526, 23321925, 196005552, 1667527836, 14333190427, 124283998707, 1085847441828, 9549523972105, 84471264138366, 751042470499425, 6708237169875867, 60164133936171522
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..20.
CROSSREFS
Cf.
A036717
-
A036723
.
Sequence in context:
A050623
A037760
A037648
*
A037767
A037655
A074571
Adjacent sequences:
A036721
A036722
A036723
*
A036725
A036726
A036727
KEYWORD
nonn
AUTHOR
N. J. A. Sloane
STATUS
approved
