id:A083535 - OEIS Search Results

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A version of the Chebyshev function theta(n): a(n) = ceiling(Sum_{primes p <= n } log(p)).

+0
2

0, 1, 2, 2, 4, 4, 6, 6, 6, 6, 8, 8, 11, 11, 11, 11, 14, 14, 17, 17, 17, 17, 20, 20, 20, 20, 20, 20, 23, 23, 27, 27, 27, 27, 27, 27, 30, 30, 30, 30, 34, 34, 38, 38, 38, 38, 41, 41, 41, 41, 41, 41, 45, 45, 45, 45, 45, 45, 50, 50, 54, 54, 54, 54, 54, 54, 58, 58, 58, 58, 62, 62, 66, 66, 66, 66 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`See A035158, which is the main entry for this function.` `The old entry with this sequence number was a duplicate of A083235.`
	CROSSREFS	`Sequence in context: A007730 A057144 A080606 this_sequence A070320 A124195 A079584` `Adjacent sequences: A083532 A083533 A083534 this_sequence A083536 A083537 A083538`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Oct 02 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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