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A037066 a(n)-th prime is the smallest prime containing exactly n 7's. 1
4, 59, 275, 4924, 58623, 506877, 4546755, 30224014, 87818618, 2836649805, 14748299309, 251285857122, 603200604933 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

Andrew R. Booker, The Nth Prime Page

MATHEMATICA

(* see A037067 for f *) PrimePi[ Table[ f[n, 7], {n, 1, 12}]]

CROSSREFS

Cf. A037067, A034388.

Sequence in context: A144992 A198511 A200048 * A113251 A183462 A093597

Adjacent sequences:  A037063 A037064 A037065 * A037067 A037068 A037069

KEYWORD

nonn,base,hard

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Jan 04 1999.

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Last modified February 17 16:00 EST 2012. Contains 206050 sequences.