

A032218


Number of dyslexic rooted compound windmills with n nodes where any 2 submills extending from the same node are different sizes.


1



1, 1, 1, 2, 3, 6, 12, 25, 51, 111, 244, 543, 1219, 2783, 6352, 14763, 34208, 80271, 188517, 446696, 1057534, 2527328, 6029096, 14488609, 34792504, 84059268, 202861050, 492369844, 1193743829, 2907834039, 7078295983, 17300759883, 42248522887, 103574837980
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,4


LINKS

Andrew Howroyd, Table of n, a(n) for n = 1..200
Index entries for sequences related to mobiles


FORMULA

Shifts left under "DFK" (bracelet, size, unlabeled) transform.


PROG

(PARI)
DFK(v)={apply(p>subst(serlaplace(p/y + polcoeff(p, 1) + polcoeff(p, 2)), y, 1)/2, Vec(1 + prod(k=1, #v, 1 + v[k]*x^k*y + O(x*x^#v)), #v))}
seq(n)={my(v=[1]); for(i=2, n, v=concat([1], DFK(v))); v} \\ Andrew Howroyd, Sep 20 2018


CROSSREFS

Sequence in context: A077903 A038086 A032305 * A005829 A038087 A116379
Adjacent sequences: A032215 A032216 A032217 * A032219 A032220 A032221


KEYWORD

nonn


AUTHOR

Christian G. Bower


EXTENSIONS

Terms a(32) and beyond from Andrew Howroyd, Sep 20 2018


STATUS

approved



