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A124411 Numbers n such that 2n+1, 4n+1, 6n+1, 8n+1, 10n+1 and 12n+1 are primes. 6
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; refs; listen; history; internal format)
OFFSET

1,1

MATHEMATICA

Select[Range[10^7], And @@ PrimeQ /@ ({2, 4, 6, 8, 10, 12}*# + 1) &] (*Chandler*)

CROSSREFS

Cf. A005097, A005098, A024899, A005123, A024912, A110801, A123998, A124408-A124411, A071576.

Sequence in context: A159203 A083602 A105655 * A205939 A163573 A206979

Adjacent sequences:  A124408 A124409 A124410 * A124412 A124413 A124414

KEYWORD

nonn

AUTHOR

Artur Jasinski grafixATcsl.pl, Oct 31 2006

EXTENSIONS

Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 20 2006

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Last modified February 15 13:14 EST 2012. Contains 205792 sequences.