A037056 a(n)-th prime is the smallest prime containing exactly n 2's.

2, 1, 48, 331, 2490, 94500, 1283805, 1402294, 12238270, 891573671, 975688072, 77612456753, 715763987889, 748327378591

Offset

0,1

Links

Table of n, a(n) for n=0..13.

Andrew R. Booker, The Nth Prime Page

Mathematica

(* see A037057 for f *) PrimePi[ Table[ f[n, 2], {n, 1, 13}]]

Crossrefs

Cf. A037057, A034388.

Sequence in context: A214221 A100018 A255856 * A358857 A109347 A054210

Adjacent sequences: A037053 A037054 A037055 * A037057 A037058 A037059

Keyword

nonn,base,hard

Author

Patrick De Geest, Jan 04 1999

Extensions

a(0)=2 prepended by Sean A. Irvine, Dec 06 2020

Status

approved