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 A094514 #10 Nov 30 2014 03:34:42 %S A094514 1,2,6,5,7,11,13,3,9,10,15,19,23,21,27,4,14,12,22,17,25,26,29,18,28, %T A094514 30,31,39,47,43,55,8,20,24,35,33,37,38,45,34,41,42,46,44,51,53,59,36, %U A094514 49,50,57,58,60,61,62,54,63,79,87,95,91,93,111,16,40,52,67,48,69,75 %N A094514 A094512(A094512(n)). %C A094514 Permutation of the natural numbers: A094513(a(n))=a(A094513(n))=n. %C A094514 A094511(a(n))=a(A094511(n))=A094512(n). %H A094514 Reinhard Zumkeller, <a href="/A094514/b094514.txt">Table of n, a(n) for n = 1..10000</a> %H A094514 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %o A094514 (Haskell) %o A094514 a094514 = a094512 . a094512 -- _Reinhard Zumkeller_, Nov 23 2014 %Y A094514 Cf. A007088, A000120. %Y A094514 Cf. A094513 (inverse), A094511, A094512. %K A094514 nonn %O A094514 1,2 %A A094514 _Reinhard Zumkeller_, May 06 2004