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 A358121 #14 Nov 03 2022 10:06:56 %S A358121 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,21,25,26, %T A358121 27,28,29,30,31,32,33,34,35,36,39,40,41,37,42,43,46,47,48,49,50,38,44, %U A358121 45,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67 %N A358121 Distinct values of A358085, in order of appearance. %C A358121 This sequence is a permutation of the positive integers with inverse A358140. %H A358121 Rémy Sigrist, <a href="/A358121/b358121.txt">Table of n, a(n) for n = 1..8192</a> %H A358121 Rémy Sigrist, <a href="/A358121/a358121.png">Scatterplot of the first 2^20 terms</a> %H A358121 Rémy Sigrist, <a href="/A358121/a358121.gp.txt">PARI program</a> %H A358121 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A358121 a(n) <= 2^k iff n <= 2^k. %o A358121 (PARI) See Links section. %Y A358121 Cf. A358085, A358140. %K A358121 nonn,base %O A358121 1,2 %A A358121 _Rémy Sigrist_, Oct 30 2022