A053620 - OEIS

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A053620

Nearest integer to R(n) = the Riemann prime number formula.

1, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 19, 20, 20 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,2`
	COMMENTS	`This is a good approximation to pi(n), the number of prime numbers<=n.`
	LINKS	`Eric Weisstein's World of Mathematics, More information`
	CROSSREFS	`Cf. A000720, A047784, A052434.` `Sequence in context: A054846 A084520 A084510 * A057360 A057364 A060144` `Adjacent sequences: A053617 A053618 A053619 * A053621 A053622 A053623`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Mar 21 2000`

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Last modified February 15 02:50 EST 2012. Contains 205694 sequences.