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A100911
Numbers k such that (3*2^k - 1)^2 - 2 is prime.
1
0, 1, 4, 6, 15, 21, 25, 70, 129, 399, 511, 856, 9574, 14479, 17649, 27054, 28296, 32796, 38176
OFFSET
1,3
COMMENTS
Next term > 100000.
a(1)-a(12) have been proved with PARI's ECPP; all subsequent terms correspond to BPSW PRPs. - Lucas A. Brown, Mar 28 2021
PROG
(PARI) is(n)=ispseudoprime((3*2^n-1)^2-2) \\ Charles R Greathouse IV, Feb 19 2016
CROSSREFS
Sequence in context: A266883 A034764 A119034 * A346297 A034765 A300276
KEYWORD
nonn,more
AUTHOR
Ray Chandler, Nov 21 2004
EXTENSIONS
a(1), a(14)-a(19) by Lucas A. Brown, Mar 28 2021
STATUS
approved