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 A350506 #17 Feb 22 2022 11:47:49 %S A350506 1,2,4,5,8,9,3,18,19,11,16,36,37,10,6,32,33,72,73,38,20,21,23,7,66,67, %T A350506 144,145,74,76,77,40,41,22,12,14,15,65,134,135,288,289,146,148,149, %U A350506 152,153,39,82,83,43,46,24,25,28,29,64,132,268,269,17,578,579 %N A350506 Inverse permutation to A350505. %H A350506 Rémy Sigrist, <a href="/A350506/b350506.txt">Table of n, a(n) for n = 1..10000</a> %H A350506 Rémy Sigrist, <a href="/A350506/a350506.txt">C++ program</a> %H A350506 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %o A350506 (C++) See Links section. %Y A350506 Cf. A350505. %K A350506 nonn,look %O A350506 1,2 %A A350506 _John-Vincent Saddic_, Jan 02 2022