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A091116 Number of primes of the form 3k+2 less than 10^n. 2
2, 13, 87, 617, 4807, 39266, 332384, 2880937, 25424820, 227529387 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Computed by T. D. Noe, Dec 19 2003.

LINKS

Table of n, a(n) for n=1..10.

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

CROSSREFS

Cf. A091115. Equals 1 + A091119.

Sequence in context: A074619 A162275 A092070 * A091099 A092849 A106938

Adjacent sequences:  A091113 A091114 A091115 * A091117 A091118 A091119

KEYWORD

nonn,more

AUTHOR

Eric W. Weisstein, Dec 19 2003

EXTENSIONS

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

STATUS

approved

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Last modified December 2 11:54 EST 2016. Contains 278678 sequences.