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A091122 Number of primes of the form 7k+3 less than 10^n. 5
1, 5, 30, 209, 1613, 13105, 110815, 960213, 8475123, 75843438 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Computed by T. D. Noe (noe(AT)sspectra.com), Dec 19, 2003.

LINKS

Eric Weisstein's World of Mathematics, Modular Prime Counting Function

CROSSREFS

Cf. A091120, A091121, A091123, A091124, A091125.

Sequence in context: A165312 A082301 A144180 * A029587 A001720 A051829

Adjacent sequences:  A091119 A091120 A091121 * A091123 A091124 A091125

KEYWORD

nonn,more

AUTHOR

Eric Weisstein (eric(AT)weisstein.com), Dec 19, 2003

EXTENSIONS

a(10) from Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 22 2003

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.