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Search: id:A124488
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A124488 Numbers n such that 2n-1, 4n-1, 6n-1, 8n-1 and 10n-1 are primes. +0
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3, 45, 6450, 18000, 22785, 41790, 54180, 77385, 87675, 98385, 103005, 104520, 151515, 187005, 210210, 244590, 256620, 320775, 329175, 354795, 382875, 387975, 431385, 495540, 509355, 528510, 632775, 763815, 804870, 810540, 812175, 849285 (list; graph; listen)
OFFSET

1,1

MATHEMATICA

Select[Range[900000], And @@ PrimeQ /@ ({2, 4, 6, 8, 10}*# - 1) &] (*Chandler*)

CROSSREFS

Cf. A124485-A124492.

Sequence in context: A004105 A060336 A057863 this_sequence A086683 A155203 A037105

Adjacent sequences: A124485 A124486 A124487 this_sequence A124489 A124490 A124491

KEYWORD

nonn

AUTHOR

Artur Jasinski (grafix(AT)csl.pl), Nov 04 2006

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.


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