A091171 - OEIS

%I #5 Oct 14 2014 11:09:52

%S 0,3,21,155,1198,9840,83152,720363,6356436,56882425,514755769,

%T 4700994974,43258230232

%N Number of primes of the form 30k + 23 less than 10^n.

%Y Cf. A091165 + A091166 + A091167 + A091168 + A091169 + A091170 + A091171 + A091172 +3 (for 2, 3 & 5) = A006880.

%K nonn,more

%O 1,2

%A _Robert G. Wilson v_, Jan 12 2004

%E a(11)-a(13) from _Hiroaki Yamanouchi_, Oct 14 2014