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 A358876 #10 Dec 06 2022 07:49:49 %S A358876 1,2,3,4,5,7,11,16,6,12,8,22,29,37,46,56,9,30,38,67,23,79,92,106,17, %T A358876 121,137,154,172,191,211,232,10,47,31,173,68,138,122,254,80,93,277, %U A358876 301,326,352,379,407,13,436,466,497,529,562,596,631,667,704,742,781 %N A358876 Inverse to A358875. %H A358876 Rémy Sigrist, <a href="/A358876/b358876.txt">Table of n, a(n) for n = 0..10000</a> %H A358876 Rémy Sigrist, <a href="/A358876/a358876.gp.txt">PARI program</a> %H A358876 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A358876 a(2^k) < a(n) if 2^k < n. %e A358876 A358875(38) = 18, so a(18) = 38. %o A358876 (PARI) See Links section. %Y A358876 Cf. A358874, A358875. %K A358876 nonn,base %O A358876 0,2 %A A358876 _Rémy Sigrist_, Dec 04 2022