A092850 - OEIS

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A092850

Number of primes between A092800(n) and 10^n.

2, 12, 81, 598, 4708, 38622, 327823, 2847315, 25163920, 225457188, 2042143752, 18663517814, 171846353051 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`a(n) = PrimePi(10^n)-PrimePi(A092800(n)) = PrimePi(10^n)-PrimePi(A046731(n)/A006880(n)). - Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 19 2007`
	EXAMPLE	`Below 10^1 there are 4 primes: 2+3+5+7=17. The rounded mean is 17/4 =~ 4. There are 2 primes > 4: 5 and 7, so a(1)=2.`
	CROSSREFS	`Cf. A092800, A092849, A092851.` `Sequence in context: A052822 A058872 A055548 * A199420 A052864 A136278` `Adjacent sequences: A092847 A092848 A092849 * A092851 A092852 A092853`
	KEYWORD	`nonn`
	AUTHOR	`Enoch Haga (Enokh(AT)comcast.net), Mar 07 2004`
	EXTENSIONS	`a(9)-a(13) from Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 19 2007`

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Last modified February 15 03:11 EST 2012. Contains 205694 sequences.