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 A115267 Primes of the form p*q*r-2, where p, q and r are distinct primes. 3
 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; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 FORMULA {A007304(n)-2} INTERSECTION {A000040}. - Jonathan Vos Post, Mar 06 2006 EXAMPLE 103 = 3*5*7-2, 163 = 3*5*11-2 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: A328822 A141962 A309412 * A107217 A142942 A142098 Adjacent sequences: A115264 A115265 A115266 * A115268 A115269 A115270 KEYWORD nonn AUTHOR Zak Seidov, Mar 04 2006 STATUS approved

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Last modified September 10 04:30 EDT 2024. Contains 375773 sequences. (Running on oeis4.)