%I #13 Apr 03 2023 10:36:09
%S 1,13,86,603,4620,37299,1533327,22568442,23574105,210014510,
%T 1893613727,17241353173,493582559244
%N a(n)-th prime is the smallest prime containing exactly n 4's.
%H Andrew R. Booker, <a href="https://t5k.org/nthprime/">The Nth Prime Page</a>
%t (* see A037061 for f *) PrimePi[ Table[ f[n, 4], {n, 1, 12}]]
%Y Cf. A037061, A034388.
%K nonn,base,hard
%O 0,2
%A _Patrick De Geest_, Jan 04 1999
%E a(0)=1 prepended by _Sean A. Irvine_, Dec 06 2020
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