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 A361646 #9 Mar 21 2023 15:03:48 %S A361646 0,1,2,3,4,7,5,6,8,15,9,14,10,11,12,13,16,31,17,30,18,19,28,29,20,23, %T A361646 24,27,21,22,25,26,32,63,33,62,34,35,60,61,36,39,56,59,37,38,57,58,40, %U A361646 47,48,55,41,46,49,54,42,43,44,45,50,51,52,53,64,127,65 %N A361646 Distinct values of A361644, in order of appearance. %C A361646 This sequence is a permutation of the nonnegative integers with inverse A361647 (and the offset equals 0 on purpose). %H A361646 Rémy Sigrist, <a href="/A361646/b361646.txt">Table of n, a(n) for n = 0..8191</a> %H A361646 Rémy Sigrist, <a href="/A361646/a361646.gp.txt">PARI program</a> %H A361646 <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a> %H A361646 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A361646 a(n) < 2^k iff n < 2^k. %o A361646 (PARI) See Links section. %Y A361646 Cf. A361644, A361647 (inverse). %K A361646 nonn,base %O A361646 0,3 %A A361646 _Rémy Sigrist_, Mar 19 2023