A283076 Smallest odd prime of the form x^2 + y^2 such that x^(2^k) + y^(2^k) is prime for all k = 1 to n.
5, 5, 5, 5, 2823521, 151062433
Offset: 1
Examples
Prime 5 = 2^2 + 1 and 2^4 + 1, 2^8 + 1, 2^16 + 1 are Fermat primes.
Prime 2823521 = 464^2 + 1615^2 is a term.
a(n) x y
--------- ---- ----
5 2 1
5 2 1
5 2 1
5 2 1
2823521 1615 464
151062433 9777 7448