id:A092849 - OEIS Search Results

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Number of primes <= A092800(n).

+0
3

2, 13, 87, 631, 4884, 39876, 336756, 2914140, 25683614, 229595323, 2075911061, 18944394204, 174219183788 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = PrimePi(A092800(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 less than 4: 2 and 3, so a(1)=2.`
	CROSSREFS	`Cf. A092800, A092850, A092851.` `Sequence in context: A092070 A091116 A091099 this_sequence A106938 A106937 A033891` `Adjacent sequences: A092846 A092847 A092848 this_sequence A092850 A092851 A092852`
	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 December 17 13:29 EST 2009. Contains 170826 sequences.