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 A082316 #9 Jul 09 2025 03:57:38
%S A082316 0,1,2,3,4,8,5,7,6,9,21,10,20,19,11,22,12,17,16,13,18,14,15,23,58,24,
%T A082316 57,56,25,59,26,54,53,27,55,51,52,28,62,29,61,60,30,63,31,45,44,32,46,
%U A082316 42,43,33,64,34,48,47,35,49,37,38,36,50,39,40,41,65,170,66,169,168
%N A082316 Permutation A057502 applied twice ("squared").
%H A082316 A. Karttunen, <a href="http://www.iki.fi/~kartturi/matikka/Nekomorphisms/gatomorf.htm">Gatomorphisms</a> (with the complete Scheme source)
%H A082316 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations induced by Catalan automorphisms</a>
%F A082316 a(n) = A057502(A057502(n))
%Y A082316 Inverse of A082315. a(n) = A057164(A082313(n)). Occurs in A073200 as row 549755978251. Cf. also A082317-A082324.
%Y A082316 Number of cycles: A054357. (In range [A014137(n-1)..A014138(n-1)] of this permutation, possibly shifted one term left or right).
%K A082316 nonn
%O A082316 0,3
%A A082316 _Antti Karttunen_, Apr 17 2003, Proposed by _Wouter Meeussen_