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A124413
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Numbers k such that 2*k+1, 4*k+1, 8*k+1, 16*k+1 and 32*k+1 are primes.
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3
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765, 3420, 7695, 8325, 16650, 22185, 28995, 33300, 41715, 52935, 72510, 75075, 82950, 99810, 104715, 106425, 115620, 121275, 145635, 159840, 165900, 173070, 188745, 190815, 192795, 222870, 225705, 239400, 240510, 253395, 253890, 256410
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listen;
history;
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internal format)
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OFFSET
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1,1
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LINKS
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Amiram Eldar, Table of n, a(n) for n = 1..10000
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MATHEMATICA
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Select[15*Range[20000], And @@ PrimeQ /@ ({2, 4, 8, 16, 32}*# + 1) &] (* Ray Chandler, Nov 21 2006 *)
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CROSSREFS
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Cf. A005097, A123998, A124041, A124412-A124417.
Sequence in context: A124412 A280972 A158126 * A319741 A329757 A127206
Adjacent sequences: A124410 A124411 A124412 * A124414 A124415 A124416
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski, Nov 02 2006
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STATUS
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approved
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