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 A387059 #7 Aug 18 2025 16:23:35 %S A387059 0,1,2,4,6,7,5,3,8,10,11,13,15,16,14,12,17,9,18,20,22,24,26,28,30,31, %T A387059 29,27,25,23,21,19,32,34,36,38,40,41,43,45,47,48,46,44,42,49,39,37,35, %U A387059 33,51,53,55,57,59,50,61,63,65,67,69,70,68,66,64,62,71,60 %N A387059 Inverse permutation to A387058. %H A387059 Rémy Sigrist, <a href="/A387059/b387059.txt">Table of n, a(n) for n = 0..10000</a> %H A387059 Rémy Sigrist, <a href="/A387059/a387059.gp.txt">PARI program</a> %H A387059 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A387059 A387058(42) = 44, so a(44) = 42. %o A387059 (PARI) \\ See Links section. %Y A387059 Cf. A387058. %K A387059 nonn %O A387059 0,3 %A A387059 _Rémy Sigrist_, Aug 15 2025