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 A337919 #14 Jan 31 2021 22:27:20 %S A337919 1,2,4,7,11,16,22,29,37,46,56,3,5,8,12,17,23,30,38,191,211,232,6,9,13, %T A337919 18,24,31,39,436,466,497,529,10,14,19,25,32,40,781,821,862,904,947,15, %U A337919 20,26,33,41,1226,1276,1327,1379,1432,1486,21,27,34,42,1771 %N A337919 Inverse permutation to A337918. %C A337919 For any n > 0, A002024(a(n)) appears as a substring in n. %H A337919 Rémy Sigrist, <a href="/A337919/b337919.txt">Table of n, a(n) for n = 1..10000</a> %H A337919 Rémy Sigrist, <a href="/A337919/a337919.pl.txt">Perl program for A337919</a> %H A337919 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A337919 A337918(67) = 120, hence a(120) = 67. %o A337919 (Perl) See Links section. %Y A337919 Cf. A002024, A337918. %K A337919 nonn,look,base %O A337919 1,2 %A A337919 _Rémy Sigrist_, Jan 29 2021