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Search: id:A124412
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A124412 Numbers n such that 2n+1, 4n+1, 8n+1 and 16n+1 are primes. +0
7
765, 1065, 1155, 1530, 3105, 3420, 3705, 5160, 6840, 7695, 8325, 9060, 11265, 11505, 12195, 14835, 15390, 15885, 16650, 17655, 20745, 22185, 23205, 27300, 28155, 28995, 30165, 30690, 33300, 33825, 39015, 41715, 42690, 44370, 48465, 49935 (list; graph; listen)
OFFSET

1,1

MATHEMATICA

Select[15*Range[3500], And @@ PrimeQ /@ ({2, 4, 8, 16}*# + 1) &] (*Chandler*)

CROSSREFS

Cf. A005097, A123998, A124041, A124413-A124417.

Sequence in context: A054468 A156395 A139674 this_sequence A158126 A124413 A127206

Adjacent sequences: A124409 A124410 A124411 this_sequence A124413 A124414 A124415

KEYWORD

nonn

AUTHOR

Artur Jasinski (grafix(AT)csl.pl), Nov 02 2006

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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