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A323005
Numbers k such that 361*2^k+1 is prime.
0
28, 36, 100, 312, 568, 2584, 9144, 37284, 96720, 105132, 147084, 222292, 280728, 292600, 1459308, 2312832, 2424232
OFFSET
1,1
MATHEMATICA
Select[Range[1000], PrimeQ[361*2^# + 1] &] (* Robert Price, Jan 01 2019 *)
CROSSREFS
Sequence in context: A359529 A105710 A192226 * A080983 A179105 A376914
KEYWORD
nonn,more,hard
AUTHOR
Robert Price, Jan 01 2019
EXTENSIONS
a(16)-a(17) from Jeppe Stig Nielsen, Jan 04 2020
STATUS
approved