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 A194076 #10 Mar 19 2022 00:34:23 %S A194076 1,3,6,2,5,9,4,8,13,10,15,21,7,12,18,14,20,27,11,17,24,19,26,34,28,36, %T A194076 45,16,23,31,25,33,42,35,44,54,22,30,39,32,41,51,43,53,64,55,66,78,29, %U A194076 38,48,40,50,61,52,63,75,65,77,90,37,47,58,49,60,72,62,74,87 %N A194076 Inverse permutation to A194075; every positive integer occurs exactly once. %t A194076 (See A194075.) %Y A194076 Cf. A194075. %K A194076 nonn %O A194076 1,2 %A A194076 _Clark Kimberling_, Aug 14 2011