id:A115267 - OEIS Search Results

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Primes of the form p*q*r-2, where p, q and r are distinct primes.

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103, 163, 193, 229, 271, 283, 383, 397, 433, 463, 593, 607, 613, 643, 661, 739, 757, 859, 883, 967, 1013, 1021, 1063, 1093, 1103, 1129, 1171, 1237, 1279, 1307, 1433, 1453, 1489, 1493, 1531, 1543, 1549, 1579, 1597, 1613, 1657, 1693, 1741, 1747, 1831 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`{A007304(n)-2} INTERSECTION {A00040}. - Jonathan Vos Post (jvospost2(AT)yahoo.com), Mar 06 2006`
	EXAMPLE	`103 = 357-2, 163 = 3511-2 etc.`
	MATHEMATICA	`Select[Prime[Range[400]], Length[FactorInteger[ #+2]]==Plus@@(Last/@FactorInteger[ #+2])==3&]`
	CROSSREFS	`Cf. A115093 Primes of the form p*q-2, where p and q are distinct primes.` `Cf. A000040, A001359, A007304, A115093.` `Sequence in context: A033256 A106983 A141962 this_sequence A107217 A142942 A142098` `Adjacent sequences: A115264 A115265 A115266 this_sequence A115268 A115269 A115270`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Mar 04 2006`

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Last modified September 8 08:06 EDT 2008. Contains 143486 sequences.

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