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 A371249 #10 Mar 16 2024 17:23:53 %S A371249 1,2,3,4,5,6,7,10,8,11,12,9,15,16,13,14,17,18,21,19,22,28,20,24,23,29, %T A371249 30,25,35,31,27,32,26,36,37,39,34,33,38,40,45,44,41,46,47,55,56,48,42, %U A371249 43,57,49,50,58,51,59,52,53,54,66,61,67,60,62,68,63,72 %N A371249 Inverse permutation to A371248. %H A371249 Rémy Sigrist, <a href="/A371249/b371249.txt">Table of n, a(n) for n = 1..10000</a> %H A371249 Rémy Sigrist, <a href="/A371249/a371249.gp.txt">PARI program</a> %H A371249 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A371249 A371248(42) = 49, so a(49) = 42. %o A371249 (PARI) See Links section. %Y A371249 Cf. A371248. %K A371249 nonn %O A371249 1,2 %A A371249 _Rémy Sigrist_, Mar 16 2024