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 A081153 #9 Jan 11 2024 09:18:08 %S A081153 0,0,0,0,0,2,0,6,0,18,0,50,0,142,0,388,0,1114,0 %N A081153 Number of odd cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506, with no fixed points of either A057163 or A057164. %F A081153 a(n) = A081148(n)-A081155(n). %Y A081153 Bisection: A081154. %Y A081153 Cf. A081148, A081155. %Y A081153 Cf. A014137, A014138, A057505, A057506, A057163, A057164. %K A081153 nonn,more %O A081153 0,6 %A A081153 _Wouter Meeussen_ and _Antti Karttunen_ Mar 10 2003