%I #4 Mar 30 2012 18:56:08

%S 1,2,4,6,7,10,11,16,17,18,19,22,25,26,27,29,30,31,36,38,40,41,42,43,

%T 46,47,49,52,57,58

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

%K nonn

%O 1,2

%A _Clark Kimberling_