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 A070264 #8 Sep 16 2019 04:44:39 %S A070264 1,3,2,6,4,5,7,10,9,8,11,14,16,12,13,15,22,20,29,19,18,17,37,21,26,23, %T A070264 27,25,46,28,56,36,24,30,33,35,67,38,31,34,79,42,92,32,43,45,106,44, %U A070264 52,53,39,40,121,54,41,55,48,57,137,64,154,66,63,78,50,51,172,49,47,75 %N A070264 Inverse permutation to that in A026098. %H A070264 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %K A070264 easy,nonn %O A070264 1,2 %A A070264 _Antti Karttunen_, May 07 2002 %E A070264 More terms from _David Wasserman_, Aug 12 2002