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Search: id:A124409
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| A124409 |
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Numbers n such that 2n+1, 4n+1, 6n+1 and 8n+1 are primes. |
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2
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| 165, 765, 1530, 2130, 2475, 3420, 5415, 7695, 9060, 11505, 12705, 13020, 15885, 16650, 20055, 20745, 22530, 24915, 26940, 29670, 32925, 35070, 36885, 39270, 44370, 47730, 48465, 54735, 55860, 56310, 58860, 65655, 66600, 67365, 67650
(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[68000], And @@ PrimeQ /@ ({2, 4, 6, 8}*# + 1) &] (*Chandler*)
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CROSSREFS
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Cf. A005097, A005098, A024899, A005123, A123998, A124408-A124411, A071576.
Adjacent sequences: A124406 A124407 A124408 this_sequence A124410 A124411 A124412
Sequence in context: A083255 A029563 A135806 this_sequence A066177 A027796 A105944
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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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