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 A082331 #8 Jul 09 2025 03:57:44 %S A082331 0,1,2,3,5,7,4,8,6,13,18,11,21,16,12,17,10,22,19,9,20,15,14,36,50,33, %T A082331 59,47,34,48,29,63,56,28,57,43,42,35,49,30,58,44,32,46,27,64,60,25,61, %U A082331 52,51,31,45,26,62,53,24,55,41,39,23,54,40,38,37,106,148,102,176,144 %N A082331 Permutation of natural numbers induced by the composition of involutions A057163 & A069888. %C A082331 a(n) = A057163(A069888(n)) %H A082331 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations induced by Catalan automorphisms</a> %Y A082331 Inverse of A082332. Occurs in A073200 as row 9223512774351650875. Cf. also A082333-A082334. %K A082331 nonn %O A082331 0,3 %A A082331 _Antti Karttunen_, Apr 17 2003, Proposed by _Wouter Meeussen_