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 A118759 #13 Sep 18 2015 17:02:59 %S A118759 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25, %T A118759 26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48, %U A118759 49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,189 %N A118759 A118757(A118757(n)). %C A118759 Inverse integer permutation of A118760; a(n)=A118760(n)=n for n<100, but a(100)=189 and A118760(100)=118; A118758(a(n))=a(A118758(n))=A118757(n). %H A118759 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/NonRecursions.html">Non Recursions</a> %H A118759 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %Y A118759 Cf. A118760. %K A118759 nonn %O A118759 0,3 %A A118759 _Reinhard Zumkeller_, May 01 2006 %E A118759 More terms from _Charles R Greathouse IV_, Sep 18 2015