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 A255552 #6 Feb 28 2015 14:49:32 %S A255552 1,2,4,3,6,5,7,8,11,12,9,17,16,23,22,30,13,38,10,47,29,57,18,68,37,80, %T A255552 15,93,24,107,46,122,56,138,31,155,67,173,14,192,39,212,79,233,21,255, %U A255552 48,278,92,302,106,327,58,353,28,380,20,408,69,437,19,467,121,498,81,530,137,563,154,597,94,632,172,668,191,705,108,743,211,782,25 %N A255552 Inverse permutation to A255551. %H A255552 Antti Karttunen, <a href="/A255552/b255552.txt">Table of n, a(n) for n = 1..221</a> %H A255552 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %Y A255552 Inverse: A255551. %Y A255552 Related permutation: A255554. %K A255552 nonn %O A255552 1,2 %A A255552 _Antti Karttunen_, Feb 26 2015