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a(n) = least positive integer > a(n-1) and not (a(i)+a(j))^2 + a(k)^2 for 1<=i<=j<=k<=n.
0

%I #4 Mar 30 2012 18:56:09

%S 1,2,3,4,6,7,9,10,11,12,14,15,16,17,19,21,22,23,24,26,27,28,29,30,31,

%T 33,35,36,37,38

%N a(n) = least positive integer > a(n-1) and not (a(i)+a(j))^2 + a(k)^2 for 1<=i<=j<=k<=n.

%K nonn

%O 1,2

%A _Clark Kimberling_