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 A079437 #12 Aug 13 2025 22:02:27 %S A079437 1,1,2,3,6,16,36,83,190,448,1056,2514,5872,13806,32424,76609,181434, %T A079437 432062,1032716 %N A079437 Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A071661. %C A079437 That is, number of orbits to which "Catalan bijections" A071661/A071662 partition each A000108(n) Catalan tree structures encoded in A014486[A014137(n-1)..A014138(n-1)]. %H A079437 Antti Karttunen, <a href="/A089408/a089408.c.txt">C-program for counting the initial terms of this sequence</a> %Y A079437 Occurs in A073201 as row 13373289. %Y A079437 Cf. A079438, A079439, A057507, A079441. %K A079437 nonn,more %O A079437 0,3 %A A079437 _Antti Karttunen_, Jan 27 2003