id:A055732 - OEIS Search Results

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Number of primes <= 7^n.

+0
1

0, 4, 15, 68, 357, 1939, 11098, 65685, 397764, 2453911, 15353323, 97163605, 620646217, 3995149838, 25885182840, 168650876819, 1104127111380 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`Index entries for sequences related to numbers of primes in various ranges`
	MATHEMATICA	`Table[PrimePi[7^n], {n, 0, 16}]`
	CROSSREFS	`Cf. A006880, A007053 and A040014.` `Sequence in context: A097422 A102129 A011967 this_sequence A125062 A039625 A020020` `Adjacent sequences: A055729 A055730 A055731 this_sequence A055733 A055734 A055735`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 09 2000`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.

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