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 A081167 #8 Jan 11 2024 09:09:02 %S A081167 1,2,10,46,236,1288,6984,38528,216648,1240818 %N A081167 Number of cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506. %F A081167 a(n) = A057507(2n+1). %Y A081167 Cf. A057507, A081151, A014137, A014138, A057505, A057506. %K A081167 nonn,more %O A081167 0,2 %A A081167 _Wouter Meeussen_ and _Antti Karttunen_, Mar 10 2003