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 A371258 #15 Apr 01 2024 12:08:54 %S A371258 0,1,2,3,7,4,5,6,8,9,13,14,21,25,22,15,16,10,11,17,18,19,12,20,23,24, %T A371258 26,27,31,32,39,55,40,41,42,56,63,67,68,75,79,76,69,70,64,57,43,44,45, %U A371258 58,46,33,34,28,29,35,36,47,59,48,49,50,60,61,51,52,37,30 %N A371258 Inverse permutation to A371257. %H A371258 Rémy Sigrist, <a href="/A371258/b371258.txt">Table of n, a(n) for n = 0..6560</a> %H A371258 Rémy Sigrist, <a href="/A371258/a371258.gp.txt">PARI program</a> %H A371258 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A371258 A371257(42) = 34, so a(34) = 42. %o A371258 (PARI) \\ See Links section. %Y A371258 Cf. A371257. %K A371258 nonn,base %O A371258 0,3 %A A371258 _Rémy Sigrist_, Mar 16 2024