id:A038108 - OEIS Search Results

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Number of prime pairs {p,q}, such that pq < n^2.

+0
1

0, 2, 6, 8, 13, 16, 22, 26, 34, 39, 48, 55, 62, 75, 82, 89, 103, 113, 126, 135, 149, 163, 179, 190, 202, 220, 236, 252, 270, 288, 304, 320, 340, 360, 381, 403, 425, 443, 462, 483, 508, 532, 556, 581, 604, 633, 655, 678, 709, 738, 761, 782 (list; graph; listen)

	OFFSET	`2,2`
	EXAMPLE	`a(3)=2 because only the prime pairs (2,2) and (2,3) form products < 9`
	CROSSREFS	`Sequence in context: A065392 A030457 A054248 this_sequence A087327 A002511 A074383` `Adjacent sequences: A038105 A038106 A038107 this_sequence A038109 A038110 A038111`
	KEYWORD	`nonn`
	AUTHOR	`Joe K. Crump (joecr(AT)carolina.rr.com)`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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