%I A143053
%S A143053 0,1,3,4,2,8,9,5,6,7,15,16,10,11,12,13,14,24,25,17,18,19,20,21,22,23,35,
%T A143053 36,26,27,28,29,30,31,32,33,34,48,49,37,38,39,40,41,42,43,44,45,46,47,
%U A143053 63,64,50,51,52,53,54,55,56,57,58,59,60,61,62,80,81,65,66,67,68,69,70
%N A143053 A143051(A143051(n)).
%C A143053 Permutation of the natural numbers, inverse: A143054;
%C A143053 a(A000290(n)) = A008865(n) for n>1;
%C A143053 a(A002522(n)) = A000290(n+1) for n>0.
%H A143053 <a href="Sindx_Per.html#IntegerPermutation">Index entries for sequences 
               that are permutations of the natural numbers</a>
%Y A143053 Sequence in context: A026217 A020502 A066892 this_sequence A120239 A082362 
               A082364
%Y A143053 Adjacent sequences: A143050 A143051 A143052 this_sequence A143054 A143055 
               A143056
%K A143053 nonn
%O A143053 0,3
%A A143053 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 20 2008