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 A341916 #12 Feb 27 2021 15:04:04 %S A341916 0,1,3,2,7,4,6,5,15,8,12,11,14,9,13,10,31,16,24,23,28,19,27,20,30,17, %T A341916 25,22,29,18,26,21,63,32,48,47,56,39,55,40,60,35,51,44,59,36,52,43,62, %U A341916 33,49,46,57,38,54,41,61,34,50,45,58,37,53,42,127,64,96 %N A341916 Inverse permutation to A341915. %H A341916 Rémy Sigrist, <a href="/A341916/b341916.txt">Table of n, a(n) for n = 0..8191</a> %H A341916 <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a> %H A341916 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %H A341916 Rémy Sigrist, <a href="/A341916/a341916.gp.txt">PARI program for A341916</a> %F A341916 a(n) = A006068(A059893(n)). %F A341916 a(n) < 2^k for any n < 2^k. %e A341916 A341915(5) = 7, so a(7) = 5. %o A341916 (PARI) See Links section. %Y A341916 Cf. A006068, A059893, A341915 (inverse), A341943 (fixed points). %K A341916 nonn,look,base %O A341916 0,3 %A A341916 _Rémy Sigrist_, Feb 24 2021