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 A064707 #19 Sep 06 2017 21:20:10 %S A064707 0,1,2,3,5,4,7,6,10,11,8,9,15,14,13,12,21,20,23,22,16,17,18,19,31,30, %T A064707 29,28,26,27,24,25,42,43,40,41,47,46,45,44,32,33,34,35,37,36,39,38,63, %U A064707 62,61,60,58,59,56,57,53,52,55,54,48,49,50,51,85,84,87,86,80,81,82,83 %N A064707 Inverse square of permutation defined by A003188. %C A064707 Not the same as A100281: a(n)=A100281(n)=A099896(A099896(n)) only for n<64. - _Reinhard Zumkeller_, Nov 11 2004 %H A064707 Ivan Neretin, <a href="/A064707/b064707.txt">Table of n, a(n) for n = 0..8191</a> %H A064707 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A064707 a(n) = A180200(A233279(n)), n > 0. - _Yosu Yurramendi_, Apr 05 2017 %o A064707 (MATLAB) A = 1; for i = 1:7 B = A(end:-1:1); A = [A (B + length(A))]; end C = A(A); for i = 1:128 A(C(i)) = i - 1; end A %Y A064707 Inverse of permutation defined by A064706. Cf. A003188. %K A064707 nonn,look,easy %O A064707 0,3 %A A064707 _N. J. A. Sloane_, Oct 13 2001 %E A064707 More terms from _David Wasserman_, Aug 02 2002