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 A361482 #8 Mar 16 2023 12:05:23 %S A361482 0,1,2,3,4,6,5,7,8,10,13,11,14,12,9,15,16,18,21,25,22,28,23,19,29,26, %T A361482 24,27,30,20,17,31,32,34,37,41,47,53,48,42,38,54,58,55,49,56,39,35,59, %U A361482 43,50,61,51,57,52,44,62,45,40,46,60,36,33,63,64,66,69,73 %N A361482 Inverse permutation to A361481. %H A361482 Rémy Sigrist, <a href="/A361482/b361482.txt">Table of n, a(n) for n = 0..8191</a> %H A361482 Rémy Sigrist, <a href="/A361482/a361482.gp.txt">PARI program</a> %H A361482 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A361482 a(2^k - 1) = 2^k - 1 for any k >= 0. %F A361482 a(2^k) = 2^k for any k >= 0. %e A361482 A361481(42) = 39, so a(39) = 42. %o A361482 (PARI) See Links section. %Y A361482 Cf. A361481. %K A361482 nonn,base %O A361482 0,3 %A A361482 _Rémy Sigrist_, Mar 14 2023