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 A163341 #7 Mar 19 2022 00:23:13 %S A163341 1,3,6,9,5,2,4,8,13,19,26,34,27,20,14,10,15,21,28,36,45,54,44,35,43, %T A163341 53,64,75,63,52,62,74,87,100,86,73,61,50,40,32,41,51,42,33,25,18,12,7, %U A163341 11,17,24,31,23,16,22,30,39,48,38,29,37,47,58,70,83,97,84,71,59,49,60 %N A163341 Inverse permutation to A163340. %H A163341 A. Karttunen, <a href="/A163341/b163341.txt">Table of n, a(n) for n = 1..6561</a> %H A163341 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A163341 a(n) = A163337(n-1) + 1. %Y A163341 Inverse: A163340. %K A163341 nonn %O A163341 1,2 %A A163341 _Antti Karttunen_, Jul 29 2009