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A217354
Numbers n such that 8^n + 3 is prime.
6
1, 2, 4, 5, 6, 10, 28, 76, 130, 370, 568, 713, 789, 790, 1334, 1354, 1849, 2913, 5729, 5740, 5978, 6908, 10618, 11918, 12748, 13449, 40850, 68654, 78442, 121040, 159948, 228526
OFFSET
1,2
COMMENTS
3*A217354 is a subsequence of A057732. - Bruno Berselli, Oct 02 2012
MATHEMATICA
Select[Range[5000], PrimeQ[8^# + 3] &]
PROG
(PARI) is(n)=ispseudoprime(8^n+3) \\ Charles R Greathouse IV, Feb 17 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Oct 02 2012
EXTENSIONS
a(19)-a(32) are obtained from A057732; by Bruno Berselli, Oct 02 2012
STATUS
approved