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A032236
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Number of dyslexic rooted compound windmills with n nodes and leaves of 2 colors where any 2 submills extending from the same node are different.
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1
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2, 2, 3, 7, 16, 41, 112, 318, 922, 2763, 8394, 25957, 81172, 256820, 819114, 2633626, 8525056, 27755962, 90841159, 298680608, 986156342, 3268174479, 10867702340, 36250205100, 121257882210, 406663900459, 1367092812987
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OFFSET
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1,1
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LINKS
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FORMULA
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Shifts left under "DGK" (bracelet, element, unlabeled) transform.
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PROG
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(PARI)
DGK(v)={apply(p->subst(serlaplace(p/y + polcoeff(p, 1) + polcoeff(p, 2)), y, 1)/2, Vec(prod(k=1, #v, (1 + x^k*y + O(x*x^#v))^v[k])-1, -#v))}
seq(n)={my(v=[2]); for(i=2, n, v=concat([2], DGK(v))); v} \\ Andrew Howroyd, Sep 20 2018
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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