OFFSET
1,1
COMMENTS
All prime divisors of (2Q)^4 + 1 are congruent to 1 modulo 8.
At least one prime divisor of (2Q)^4 + 1 is congruent to 2 modulo 3 and hence to 17 modulo 24.
The first four terms are the same as those of A125039.
REFERENCES
G. A. Jones and J. M. Jones, Elementary Number Theory, Springer-Verlag, NY, (1998), p. 271.
LINKS
Sean A. Irvine, Table of n, a(n) for n = 1..20
EXAMPLE
a(3) = 4261668267710686591310687815697 is the smallest prime divisor congruent to 17 mod 24 of (2Q)^4 + 1 = 4261668267710686591310687815697, where Q = 17 * 1336337.
CROSSREFS
KEYWORD
nonn
AUTHOR
Nick Hobson, Nov 18 2006
EXTENSIONS
More terms from Sean A. Irvine, Jun 09 2015
STATUS
approved