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%I #10 Apr 14 2022 05:33:49
%S 4,10,18,25,32,42,50,58,65,72,78,83,93,106,114,125,139,143,149,157,
%T 167,176,183,194,198,209,219,221,229,237,243,250,260,270,273,278,286,
%U 294,304,314,317,323,327,337,342,352,362,371,377,394,399,405,414,420
%N Number of Pierpont primes less than 10^n.
%H Amiram Eldar, <a href="/A113420/b113420.txt">Table of n, a(n) for n = 1..1000</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PierpontPrime.html">Pierpont Prime</a>.
%Y Cf. A005109, A113412.
%K nonn
%O 1,1
%A _Eric W. Weisstein_, Oct 29 2005