A031030 - OEIS

%I #4 Mar 30 2012 18:56:20

%S 2,19,24,33,49,50,51,59,63,73,75,77,90,99,102,107,112,119,129,135,148,

%T 161,162,166,167,173,174,175,197,199,206,213,222,233,240,242,248,258,

%U 261,267,269,277,280,283,285,291,301,310,313

%N Position of n-th 2 in A031027.

%K nonn

%O 1,1

%A _Clark Kimberling_