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Search: id:A124411
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| A124411 |
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Numbers n such that 2n+1, 4n+1, 6n+1, 8n+1, 10n+1 and 12n+1 are primes. |
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+0
6
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| 12705, 13020, 105525, 256410, 966840, 1707510, 1944495, 2310000, 2478630, 3132675, 3836070, 3976770, 4112430, 4532325, 5499585, 5920005, 6610485, 7390845, 8552250, 10739505, 11120340, 12231450, 12338130, 13243230, 16467255
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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Select[Range[10^7], And @@ PrimeQ /@ ({2, 4, 6, 8, 10, 12}*# + 1) &] (*Chandler*)
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CROSSREFS
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Cf. A005097, A005098, A024899, A005123, A024912, A110801, A123998, A124408-A124411, A071576.
Sequence in context: A159203 A083602 A105655 this_sequence A163573 A157509 A035916
Adjacent sequences: A124408 A124409 A124410 this_sequence A124412 A124413 A124414
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski grafixATcsl.pl, Oct 31 2006
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 20 2006
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