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A126955
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Numbers n such that 2n+1, 3n+2 and 4n+3 are primes.
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1
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1, 5, 65, 89, 119, 215, 455, 755, 779, 965, 1175, 1349, 1409, 1469, 1679, 1745, 1769, 1889, 1955, 2009, 2105, 2435, 2519, 2525, 2585, 2639, 4685, 5045, 5165, 5735, 5915, 5969, 6725, 7415, 7469, 7895, 8045, 9065, 9365, 9449, 9659, 9779, 9959, 10379
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| Take n = 89. Then 2*89 + 1 = 179, 3*89 + 2 = 269 and 4*89 + 3 = 359 are primes.
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MATHEMATICA
| Select[Range[10500], PrimeQ[2# + 1] && PrimeQ[3# + 2] && PrimeQ[4# + 3] &] (*Chandler*)
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CROSSREFS
| Intersection of A005097, A024893, A095278. Cf. A126956.
Sequence in context: A196304 A061684 A061698 * A091105 A071902 A052199
Adjacent sequences: A126952 A126953 A126954 * A126956 A126957 A126958
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KEYWORD
| nonn
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AUTHOR
| J. M. Bergot (thekingfishb(AT)yahoo.ca), Mar 19 2007
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EXTENSIONS
| Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Robert G. Wilson v and Stuart Clary, Mar 20 2007
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