A000882 - OEIS

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A000882

Number of twin prime pairs <= product of first n primes.

0, 1, 4, 15, 69, 468, 4636, 57453, 896062, 18463713, 425177757, 11997649372, 385088898632, 13280323588034, 509456736126003 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	LINKS	`Tomas Oliveira e Silva, Tables of values of pi(x) and of pi2(x) [From Donovan Johnson (donovan.johnson(AT)yahoo.com), Mar 01 2010]`
	CROSSREFS	`Sequence in context: A125062 A039625 A020020 * A098614 A027316 A085349` `Adjacent sequences: A000879 A000880 A000881 * A000883 A000884 A000885`
	KEYWORD	`nonn,hard`
	AUTHOR	`gandalf(AT)hrn.office.ssi.net (James D. Ausfahl)`
	EXTENSIONS	`More terms from David W. Wilson (davidwwilson(AT)comcast.net)` `a(10)-a(15) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Mar 01 2010`

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Last modified February 16 04:47 EST 2012. Contains 205860 sequences.