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A036720 G.f. satisfies A(x) = 1 + x*cycle_index(Klein_4_group, A(x)). +0
2
1, 1, 1, 4, 8, 27, 79, 270, 894, 3130, 11011, 39622, 143879, 528919, 1960248, 7323999, 27542451, 104194485, 396204388, 1513599583, 5806283770, 22356914550, 86376741339, 334752355281, 1300999638753, 5069411676111, 19800500391264 (list; graph; listen)
OFFSET

0,4

CROSSREFS

Cf. A036717-A036719.

Sequence in context: A100411 A065405 A026085 this_sequence A110132 A099513 A104042

Adjacent sequences: A036717 A036718 A036719 this_sequence A036721 A036722 A036723

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.


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