%I A131752
%S A131752 1,2,4,7,10,16,24,36,56,76,112,160
%N A131752 Number of ways of choosing the largest subset of {1,2,...,n} such that 
               no two distinct elements differ by a perfect square.
%Y A131752 Cf. A100719, A131753, A131754.
%Y A131752 Sequence in context: A160790 A000376 A000375 this_sequence A062365 A049630 
               A032705
%Y A131752 Adjacent sequences: A131749 A131750 A131751 this_sequence A131753 A131754 
               A131755
%K A131752 nonn
%O A131752 1,2
%A A131752 Olivier Gerard (olivier.gerard(AT)gmail.com), Sep 17 2007