A026503 - OEIS

%I #5 Mar 31 2012 13:50:34

%S 1,2,4,5,6,7,8,9,10,11,12,13,15,16,18,19,21,22,24,25,27,28,30,31,33,

%T 36,37,40,42,43,45,46,48,51,57,58,60,61,63,67,70,72,75,78,81,82,85,88,

%U 91,93,96,102,105,112,117,120,121,123,130,133

%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_

%E More terms from _Naohiro Nomoto_, Sep 15 2001