This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A032174 #12 Jun 21 2018 10:34:02
%S A032174 2,1,4,15,66,291,1368,6555,32262,161505,821280,4227710,21996052,
%T A032174 115469442,610894004,3253836785,17434360442,93907348819,508194420136,
%U A032174 2761768079091,15065823780102,82469439357341
%N A032174 Number of series-reduced planted compound windmills with n leaves of 2 colors with no symmetries.
%H A032174 Andrew Howroyd, <a href="/A032174/b032174.txt">Table of n, a(n) for n = 1..200</a>
%H A032174 <a href="/index/Mo#mobiles">Index entries for sequences related to mobiles</a>
%F A032174 Doubles (index 2+) under "CHK" (necklace, identity, unlabeled) transform.
%o A032174 (PARI)
%o A032174 CHK(p,n)={sum(d=1, n, moebius(d)/d*log(subst(1/(1+O(x*x^(n\d))-p), x, x^d)))}
%o A032174 seq(n)={my(p=2*x); for(i=2, n, p+=x^i*polcoeff(CHK(p,i),i)); Vecrev(p/x)} \\ _Andrew Howroyd_, Jun 21 2018
%K A032174 nonn
%O A032174 1,1
%A A032174 _Christian G. Bower_