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%I #23 Oct 04 2020 23:37:21
%S 0,5,34,269,2334,21950,215880,2194607,22847147,242104347,2601245287,
%T 28259222007,309787170203,3421648542571,38034025346108,
%U 425087937349054,4773520663632666,53826449764030293,609169697312869287,6916564779879112525,78759689142381711336
%N Number of primes <= 12^n.
%H David Baugh, <a href="/A058248/b058248.txt">Table of n, a(n) for n = 0..24</a> (terms n = 20..24 found using Kim Walisch's primecount program)
%H <a href="/index/Pri#primepop">Index entries for sequences related to numbers of primes in various ranges</a>
%F a(n) = pi(12^n), where pi is the prime counting function (A000720). - _Wesley Ivan Hurt_, Oct 02 2020
%t Table[PrimePi[12^n], {n, 0, 12}]
%Y Cf. A000720 (pi), A006880 (10^n), A007053 (2^n).
%K nonn
%O 0,2
%A _Robert G. Wilson v_, Dec 04 2000
%E a(13)-a(19) from _Henri Lifchitz_, Aug 25 2014
%E a(20) from _David Baugh_, Sep 30 2020