A026489 - OEIS

A026489

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

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

%S 1,2,3,4,8,9,18,19,29,39,40,60,70,80,81,95,123,143,144,154,164,169,

%T 174,189,217,248,258,268,273,278

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

%K nonn

%O 1,2

%A _Clark Kimberling_