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Search: id:A032171
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A032171 Number of rooted compound windmills (mobiles) of n nodes with no symmetries. +0
4
1, 1, 1, 2, 4, 10, 23, 59, 148, 385, 1006, 2678, 7170, 19421, 52933, 145364, 401421, 1114713, 3109710, 8713076, 24506121, 69168705, 195849114, 556165311, 1583601840, 4520226558, 12931917204, 37075154703 (list; graph; listen)
OFFSET

1,4
LINKS

Index entries for sequences related to mobiles

FORMULA

Shifts left under "CHK" (necklace, identity, unlabeled) transform.

CROSSREFS

Cf. A032200, A055363.

Sequence in context: A137681 A127389 A152173 this_sequence A127713 A151256 A124480

Adjacent sequences: A032168 A032169 A032170 this_sequence A032172 A032173 A032174

KEYWORD

nonn,eigen

AUTHOR

Christian G. Bower (bowerc(AT)usa.net)

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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