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 A229976 #5 Oct 06 2013 14:14:59 %S A229976 1,3,2,4,7,45,8,5,6,9,21,310,46,20,14,11,23,10,22,19,13,26,334,378, %T A229976 104038,89,309,335,27,341,33,344,17,24,43,18,12,25,44,336 %N A229976 Inverse permutation to A228784. %C A229976 a(A228784(n))=n, for any n>0. %C A229976 a(2^n-1)=A046959(n+1), for any n>0. %C A229976 a(2^n)=A046964(n+1), for any n>=0. %Y A229976 Cf. A046959, A046964, A228784. %K A229976 nonn %O A229976 1,2 %A A229976 _Paul Tek_, Oct 05 2013