A031080 - OEIS

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

%S 3,16,34,45,47,49,51,52,53,55,57,59,61,70,88,106,124,142,164,191,218,

%T 235,238,241,244,245,247,250,253,256,259,272,299,326,353,380,407,434,

%U 461,478,481,484,487,488,490,493,496,499,502

%N Position of n-th 3 in A031076.

%K nonn

%O 1,1

%A _Clark Kimberling_