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 A080297 #5 Jan 11 2024 10:24:50 %S A080297 1,3,202,41888 %N A080297 Orbit size of each tree A080293(n) under Meeussen's bf<->df map on binary trees. %C A080297 This is the size of the cycle containing A080295(n) in the permutations A057117/A057118. %F A080297 a(n) = A080311(A080295(n)). %Y A080297 Cf. A080273, A080274. %K A080297 nonn,more %O A080297 0,2 %A A080297 _Antti Karttunen_, Mar 02 2003