%I #5 Mar 30 2012 18:51:00

%S 0,1,3,4,2,6,7,8,9,5,11,12,13,14,15,16,10,18,19,20,21,22,23,24,25,17,

%T 27,28,29,30,31,32,33,34,35,36,26,38,39,40,41,42,43,44,45,46,47,48,49,

%U 37,51,52,53,54,55,56,57,58,59,60,61,62,63,64,50,66,67,68,69,70,71,72,73

%N Inverse permutation to A143051.

%C A143054(n) = a(a(n));

%C a(A005563(n)) = A000290(n+1) for n>0;

%C a(A000290(n)) = A002522(n-1) + 1 for n>0.

%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

%K nonn

%O 0,3

%A _Reinhard Zumkeller_, Jul 20 2008