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A032160 Number of rooted compound windmills with n nodes where any 2 submills extending from the same node are different. 0
1, 1, 1, 2, 3, 6, 13, 28, 61, 138, 325, 758, 1804, 4317, 10457, 25484, 62478, 154000, 381494, 949217, 2370840, 5943552, 14946766, 37700390, 95346724, 241744854, 614328965, 1564488480, 3992092421, 10205366192 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..30.

Index entries for sequences related to mobiles

FORMULA

Shifts left under "CGK" (necklace, element, unlabeled) transform.

CROSSREFS

Sequence in context: A075853 A132045 A032143 * A089735 A000646 A197463

Adjacent sequences:  A032157 A032158 A032159 * A032161 A032162 A032163

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified February 21 04:40 EST 2018. Contains 299389 sequences. (Running on oeis4.)