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 A255128 #6 Feb 22 2015 23:29:31 %S A255128 1,2,4,3,7,5,11,8,6,12,16,17,22,23,9,30,29,38,10,47,13,57,37,68,46,80, %T A255128 18,93,56,107,15,122,24,138,14,155,67,173,31,192,79,212,92,233,39,255, %U A255128 106,278,19,302,48,327,121,353,21,380,58,408,20,437,137,467,69,498,25,530,154,563,81,597,172,632,28,668,94,705,191,743,32 %N A255128 Inverse permutation to A255127. %H A255128 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A255128 a(n) = A252460(A255408(n)). %Y A255128 Inverse: A255127 (with assumed silent a(1)=1). %Y A255128 Cf. A252460, A255408, A255130. %K A255128 nonn %O A255128 1,2 %A A255128 _Antti Karttunen_, Feb 22 2015