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 A032289 Number of dyslexic rooted compound windmills with n nodes. 2
 1, 1, 2, 4, 9, 20, 49, 119, 305, 790, 2100, 5648, 15449, 42664, 119128, 335310, 951119, 2714974, 7795211, 22493655, 65202995, 189767806, 554326057, 1624572250, 4775504516, 14076385819, 41596613660, 123206155126 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS Andrew Howroyd, Table of n, a(n) for n = 1..200 FORMULA Shifts left under "DIK" (bracelet, indistinct, unlabeled) transform. PROG (PARI) DIK(p, n)={(sum(d=1, n, eulerphi(d)/d*log(subst(1/(1+O(x*x^(n\d))-p), x, x^d))) + ((1+p)^2/(1-subst(p, x, x^2))-1)/2)/2} seq(n)={my(p=O(1)); for(i=1, n, p=1+DIK(x*p, i)); Vec(p)} \\ Andrew Howroyd, Jun 20 2018 CROSSREFS Cf. A038038. Sequence in context: A289971 A093637 A068051 * A006648 A128496 A134955 Adjacent sequences:  A032286 A032287 A032288 * A032290 A032291 A032292 KEYWORD nonn,eigen AUTHOR STATUS approved

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Last modified October 21 17:10 EDT 2018. Contains 316427 sequences. (Running on oeis4.)