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Search: id:A126956
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| A126956 |
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Numbers n such that 3n+2, 4n+3 and 5n+4 are primes. |
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+0
2
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| 5, 17, 77, 89, 119, 185, 257, 287, 395, 665, 755, 797, 929, 1175, 1259, 1337, 1379, 1445, 1469, 1769, 2057, 2105, 3125, 3419, 3437, 3629, 3815, 3989, 4079, 4157, 4175, 4217, 4367, 4445, 4847, 5045, 5375, 6089, 6137, 6167, 6359, 6419, 6485, 6725, 6887
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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Take n = 185. Then 3*185 + 2 = 557, 4*185 + 3 = 743 and 5*185 + 4 = 929 are primes.
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MATHEMATICA
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Select[Range[7000], PrimeQ[3# + 2] && PrimeQ[4# + 3] && PrimeQ[5# + 4] &] (*Chandler*)
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CROSSREFS
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Intersection of A024893, A095278, A024897. Cf. A126955.
Sequence in context: A149735 A149736 A145959 this_sequence A149737 A149738 A149739
Adjacent sequences: A126953 A126954 A126955 this_sequence A126957 A126958 A126959
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KEYWORD
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nonn
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AUTHOR
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J. M. Bergot (thekingfishb(AT)yahoo.ca), Mar 19 2007
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EXTENSIONS
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Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Stuart Clary, Robert G. Wilson v and Zak Seidov, Mar 20 2007
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