A037056 - OEIS

%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