login
A283051
Positive integers n such that none of the primes of the form k*2^n + 1 (with k odd) divide any Fermat number F(m) = 2^(2^m) + 1, m >= 0.
0
OFFSET
1,1
COMMENTS
Conjecture: sequence is infinite.
a(5) >= 18.
LINKS
Eric Weisstein's World of Mathematics, Fermat Number
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
STATUS
approved