OFFSET
0,1
COMMENTS
Polynomial factorizations exist for n=3,9,11,17,27 and may exist for other n > 27.
For those n for which a proven factorization exists, b=1 results in a prime of the form n+2.
EXAMPLE
a(6)=448 because 448 is the smallest number b such that 1 + Sum_{k=0..6} b^(2^k) is prime.
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Kellen Shenton, Mar 30 2022
EXTENSIONS
a(16)-a(17) from Kellen Shenton, May 08 2022
STATUS
approved