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A100912
Numbers k such that (3*2^k+1)^2-2 is prime.
0
1, 2, 4, 10, 13, 19, 20, 34, 37, 40, 317, 1258, 1651, 3370, 3640, 3715, 6818, 6925, 8050, 18193
OFFSET
1,2
COMMENTS
Next term is > 21000. - Ryan Propper, Sep 03 2005
PROG
(PARI) is(n)=ispseudoprime((3*2^n+1)^2-2) \\ Charles R Greathouse IV, Feb 19 2016
CROSSREFS
Sequence in context: A216814 A180427 A127591 * A174721 A026224 A034233
KEYWORD
nonn
AUTHOR
Ray Chandler, Nov 21 2004
EXTENSIONS
One more term from Ryan Propper, Sep 03 2005
STATUS
approved