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 A086585 #8 May 19 2024 03:18:36 %S A086585 1,1,2,4,8,18,40,86,198,438,982,2218,5072,11642 %N A086585 Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutations A085169/A085170. %Y A086585 Cf. A014137, A014138, A085169, A085170. %K A086585 nonn,more %O A086585 0,3 %A A086585 _Antti Karttunen_, Jun 23 2003