A091117 - OEIS

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A091117

Number of primes of the form 5k+2 less than 10^n.

2, 7, 47, 309, 2412, 19622, 166212, 1440496, 12712315, 113764040 (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	`Sequence in context: A201481 A054555 A072287 * A056854 A117141 A125813` `Adjacent sequences: A091114 A091115 A091116 * A091118 A091119 A091120`
	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 June 19 09:59 EDT 2013. Contains 226401 sequences.