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 A194065 #8 Mar 19 2022 00:25:27 %S A194065 1,3,6,2,5,9,10,4,8,13,14,15,21,7,12,18,19,20,27,28,11,17,24,25,26,34, %T A194065 35,36,45,16,23,31,32,33,42,43,44,54,55,22,30,39,40,41,51,52,53,64,65, %U A194065 66,29,38,48,49,50,61,62,63,37,47,58,59,60,46,57 %N A194065 Inverse permutation to A194064; every positive integer occurs exactly once. %t A194065 (See A194064.) %Y A194065 Cf. A194064. %K A194065 nonn %O A194065 1,2 %A A194065 _Clark Kimberling_, Aug 14 2011