A239037 - OEIS

%I #8 Mar 09 2014 12:11:21

%S 2,3,5,7,3,7,2,3,3,7,5,7,7,7,3,7,3,7,3,3,3,5,3,7,7,3,7,2,2,2,2,3,3,3,

%T 2,3,3,3,3,7,7,7,5,5,5,5,7,3,7,3,3,7,5,3,7,7,7,7,7,2,2,3,5,3,3,7,7,2,

%U 7,7,7,3,7,3,2,3,3,5,3,7,3,7,3,7,2,5,3,7,7,3,2,2,2,2,3,3,3,3,3,2,3,7,5,5,7,3,7,3,5,5,7,3,2,3,7,3,7,7,7,7,3,7,7,7,7,7,3,3,5,7,7,3,7,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2

%N a(n) = prime digit in A092621(n).

%C From first 12000 terms, numbers of 2s, 3s, 5s, and 7s are:  2308, 3729, 2267, 3696. Note that numbers of 2s and 5s are very close to each other, and the same is for numbers of 3s and 7s.

%Y Cf. A092621

%K nonn,base

%O 1,1

%A _Zak Seidov_, Mar 09 2014