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A032174 Number of series-reduced planted compound windmills with n leaves of 2 colors with no symmetries. 3
2, 1, 4, 15, 66, 291, 1368, 6555, 32262, 161505, 821280, 4227710, 21996052, 115469442, 610894004, 3253836785, 17434360442, 93907348819, 508194420136, 2761768079091, 15065823780102, 82469439357341 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..22.

Index entries for sequences related to mobiles

FORMULA

Doubles (index 2+) under "CHK" (necklace, identity, unlabeled) transform.

CROSSREFS

Sequence in context: A232376 A263575 A162977 * A212267 A087801 A238454

Adjacent sequences:  A032171 A032172 A032173 * A032175 A032176 A032177

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified February 20 04:39 EST 2018. Contains 299358 sequences. (Running on oeis4.)