id:A046315 - OEIS Search Results

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Odd numbers divisible by exactly 2 primes (counted with multiplicity).

+0
31

9, 15, 21, 25, 33, 35, 39, 49, 51, 55, 57, 65, 69, 77, 85, 87, 91, 93, 95, 111, 115, 119, 121, 123, 129, 133, 141, 143, 145, 155, 159, 161, 169, 177, 183, 185, 187, 201, 203, 205, 209, 213, 215, 217, 219, 221, 235, 237, 247, 249, 253, 259, 265, 267, 287, 289 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Or, odd semiprimes.`
	LINKS	`Zak Seidov, Table of n, a(n) for n = 1..1956`
	MATHEMATICA	`Do[If[Total[FactorInteger[n]][[2]]==2&&OddQ[n], Print[n]], {n, 3, 40}]$a (Zak Seidov)`
	CROSSREFS	`Cf. A001358.` `Adjacent sequences: A046312 A046313 A046314 this_sequence A046316 A046317 A046318` `Sequence in context: A046446 A046350 A046337 this_sequence A046372 A025045 A107987`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1998.`

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Last modified May 11 10:28 EDT 2008. Contains 139662 sequences.

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