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 A365231 #9 Aug 31 2023 15:52:29 %S A365231 1,2,4,3,7,5,11,8,6,10,16,9,22,12,13,17,29,18,37,14,15,21,46,23,19,28, %T A365231 24,20,56,25,67,30,27,36,26,31,79,38,35,32,92,33,106,34,39,47,121,48, %U A365231 41,40,44,43,137,57,42,50,45,66,154,49,172,68,58,80,52,51 %N A365231 Inverse permutation to A365230. %H A365231 Rémy Sigrist, <a href="/A365231/b365231.txt">Table of n, a(n) for n = 1..10000</a> %H A365231 Rémy Sigrist, <a href="/A365231/a365231.gp.txt">PARI program</a> %H A365231 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A365231 A365230(42) = 55, hence a(55) = 42. %o A365231 (PARI) See Links section. %Y A365231 Cf. A365230. %K A365231 nonn %O A365231 1,2 %A A365231 _Rémy Sigrist_, Aug 27 2023