A031092 - OEIS

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

%S 4,17,35,53,64,66,68,70,71,72,74,76,78,80,89,107,125,143,165,192,219,

%T 246,262,265,268,271,273,274,277,280,283,286,300,327,354,381,408,435,

%U 462,489,505,508,511,514,516,517,520,523,526

%N Position of n-th 4 in A031087.

%K nonn

%O 1,1

%A _Clark Kimberling_