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%I #5 Mar 30 2012 18:56:08
%S 1,3,4,5,6,7,8,9,11,12,13,14,15,16,18,19,20,21,22,23,24,27,28,29,30,
%T 31,32,33,35,36,38,39,40,42,43,44,46,47,48,49,51,53,54,55,56,57,59,60,
%U 62,63,64,66,67,68,69,70,71,72,75,76
%N a(1) = 1; for n > 1, a(n) = least positive integer > a(n-1) and not a(i)^2 + a(j)^2 for 1<=i<j<=n-1.
%K nonn
%O 1,2
%A _Clark Kimberling_