%I A006042 M2251
%S A006042 1,3,2,6,7,5,4,13,12,14,15,11,10,8,9,24,25,27,26,30,31,29,28,21,20,22,
%T A006042 23,19,18,16,17,52,53,55,54,50,51,49,48,57,56,58,59,63,62,60,61,44,45
%N A006042 Nim-squares.
%D A006042 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A006042 J. H. Conway, On Numbers and Games. Academic Press, NY, 1976, pp. 51-53.
%H A006042 <a href="Sindx_Ni.html#Nimmult">Index entries for sequences related to 
               Nim-multiplication</a>
%Y A006042 Sequence in context: A154447 A003188 A154435 this_sequence A100280 A092745 
               A074679
%Y A006042 Adjacent sequences: A006039 A006040 A006041 this_sequence A006043 A006044 
               A006045
%K A006042 nonn,nice,easy,more
%O A006042 1,2
%A A006042 N. J. A. Sloane (njas(AT)research.att.com).