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A032238 Number of series-reduced dyslexic planted compound windmills with n leaves of 2 colors where any 2 submills extending from the same node are different. 1
2, 1, 2, 5, 14, 43, 142, 475, 1640, 5774, 20682, 74911, 274392, 1014155, 3778158, 14170988, 53471322, 202835554, 773073462, 2958951714, 11368816862, 43832643969, 169531531422, 657591743743, 2557480816940, 9970749112046, 38960285199980, 152554056890622 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Andrew Howroyd, Table of n, a(n) for n = 1..200

C. G. Bower, Transforms (2)

Index entries for sequences related to mobiles

FORMULA

Doubles (index 2+) under "DGK" (bracelet, element, unlabeled) transform.

PROG

(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(v, DGK(concat(v, [0]))[i])); v} \\ Andrew Howroyd, Sep 20 2018

CROSSREFS

Sequence in context: A280339 A115141 A031148 * A000619 A006602 A144824

Adjacent sequences:  A032235 A032236 A032237 * A032239 A032240 A032241

KEYWORD

nonn

AUTHOR

Christian G. Bower

EXTENSIONS

Terms a(26) and beyond from Andrew Howroyd, Sep 20 2018

STATUS

approved

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Last modified December 15 20:00 EST 2019. Contains 330000 sequences. (Running on oeis4.)