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A124414 Numbers k such that 2*k+1, 4*k+1, 8*k+1, 16*k+1, 32*k+1 and 64*k+1 are primes. 2
8325, 16650, 82950, 165900, 192795, 222870, 239400, 290235, 601560, 884220, 971685, 1020600, 1065570, 1120470, 1170330, 1196715, 1263360, 1638735, 1768440, 1811940, 1940190, 1948815, 2061810, 2207685, 2240940, 2639295, 2830905 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[15*Range[200000], And @@ PrimeQ /@ ({2, 4, 8, 16, 32, 64}*# + 1) &] (* Ray Chandler, Nov 21 2006 *)

CROSSREFS

Cf. A005097, A123998, A124041, A124412-A124417.

Sequence in context: A258676 A170778 A062852 * A124415 A233954 A224465

Adjacent sequences:  A124411 A124412 A124413 * A124415 A124416 A124417

KEYWORD

nonn

AUTHOR

Artur Jasinski, Nov 02 2006

STATUS

approved

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Last modified January 26 22:05 EST 2022. Contains 350601 sequences. (Running on oeis4.)