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 A371247 #10 Mar 16 2024 17:24:18 %S A371247 1,2,3,4,6,5,7,9,10,8,11,14,13,15,12,16,21,20,18,22,17,19,25,27,26,24, %T A371247 28,23,29,35,32,36,37,30,33,41,34,44,42,31,39,45,43,46,38,40,52,49,53, %U A371247 54,47,50,48,55,56,51,66,61,63,58,59,60,67,57,78,62,64 %N A371247 Inverse permutation to A371246. %H A371247 Rémy Sigrist, <a href="/A371247/b371247.txt">Table of n, a(n) for n = 1..10000</a> %H A371247 Rémy Sigrist, <a href="/A371247/a371247.gp.txt">PARI program</a> %H A371247 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A371247 A371246(42) = 39, so a(39) = 42. %o A371247 (PARI) See Links section. %Y A371247 Cf. A371246. %K A371247 nonn %O A371247 1,2 %A A371247 _Rémy Sigrist_, Mar 16 2024