id:A033843 - OEIS Search Results

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Number of twin primes < 2^n.

+0
2

0, 1, 2, 3, 5, 7, 10, 17, 24, 36, 62, 107, 177, 290, 505, 860, 1526, 2679, 4750, 8535, 15500, 27995, 50638, 92246, 168617, 309561, 571313, 1056281, 1961080, 3650557, 6810670, 12739574, 23878645, 44849427, 84384508, 159082253, 300424743 (list; graph; listen)

	OFFSET	`1,3`
	LINKS	`Index entries for sequences related to numbers of primes in various ranges`
	CROSSREFS	`Cf. A007053, A007508.` `Sequence in context: A052011 A005468 A104622 this_sequence A075657 A039711 A039710` `Adjacent sequences: A033840 A033841 A033842 this_sequence A033844 A033845 A033846`
	KEYWORD	`nonn,hard`
	AUTHOR	`Vasiliy Danilov (danilovv(AT)usa.net) Jun 15 1998`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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