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A037056
a(n)-th prime is the smallest prime containing exactly n 2's.
1
2, 1, 48, 331, 2490, 94500, 1283805, 1402294, 12238270, 891573671, 975688072, 77612456753, 715763987889, 748327378591
OFFSET
0,1
MATHEMATICA
(* see A037057 for f *) PrimePi[ Table[ f[n, 2], {n, 1, 13}]]
CROSSREFS
Sequence in context: A214221 A100018 A255856 * A358857 A109347 A054210
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