A055732 - OEIS

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A055732

Number of primes <= 7^n.

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

	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: A102129 A164310 A011967 * A125062 A039625 A020020` `Adjacent sequences: A055729 A055730 A055731 * A055733 A055734 A055735`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 09 2000`

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Last modified February 16 04:18 EST 2012. Contains 205860 sequences.