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 A303768 #10 Mar 22 2022 00:12:20 %S A303768 0,1,3,2,5,6,4,7,9,10,12,11,14,15,13,8,17,18,20,19,22,23,21,24,26,27, %T A303768 29,28,31,16,30,25,33,34,36,35,38,39,37,40,42,43,45,44,47,48,46,41,50, %U A303768 51,53,52,55,56,54,57,59,60,62,61,32,49,63,58,65,66,68,67,70,71,69,72,74,75,77,76,79,80,78,73,82,83,85,84,87 %N A303768 Inverse permutation to A303767. %H A303768 Antti Karttunen, <a href="/A303768/b303768.txt">Table of n, a(n) for n = 0..16383</a> %H A303768 <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a> %H A303768 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A303768 For all n >= 1, A000523(a(n)) = A000523(n). %o A303768 (PARI) \\ Use the program given in A303767. %Y A303768 Cf. A303767 (inverse). %Y A303768 Cf. also A303764, A303766 for similar permutations. %K A303768 nonn,base %O A303768 0,3 %A A303768 _Antti Karttunen_, May 02 2018