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 A073294 #8 May 26 2017 14:55:49 %S A073294 0,1,2,3,4,5,6,7,8,10,9,11,13,12,14,15,16,18,17,19,20,22,21,26,27,25, %T A073294 24,23,29,28,33,35,36,30,34,32,31,38,37,39,41,40,42,43,47,49,50,44,48, %U A073294 46,45,51,52,53,55,54,60,61,63,64,56,57,62,59,58,73,74,76,77,78,72,75 %N A073294 Permutation A069767 applied four times or permutation A073290 applied twice. %H A073294 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A073294 a(n) = A069767(A069767(A069767(A069767(n)))) = A073290(A073290(n)). %Y A073294 Inverse permutation: A073295. Cf. A073290-A073299. Occurs in A073200 as row 142647371. %K A073294 nonn %O A073294 0,3 %A A073294 _Antti Karttunen_, Jun 25 2002