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%I #13 Apr 03 2023 10:36:09
%S 2,1,48,331,2490,94500,1283805,1402294,12238270,891573671,975688072,
%T 77612456753,715763987889,748327378591
%N a(n)-th prime is the smallest prime containing exactly n 2's.
%H Andrew R. Booker, <a href="https://t5k.org/nthprime/">The Nth Prime Page</a>
%t (* see A037057 for f *) PrimePi[ Table[ f[n, 2], {n, 1, 13}]]
%Y Cf. A037057, A034388.
%K nonn,base,hard
%O 0,1
%A _Patrick De Geest_, Jan 04 1999
%E a(0)=2 prepended by _Sean A. Irvine_, Dec 06 2020