a(n) is the smallest natural number m such that 4^4^k + m is prime for k=0,1,...,n.

A129615

a(n) is the smallest natural number m such that 4^4^k + m is prime for k=0,1,...,n.

Terms

    a(0) =1a(1) =1a(2) =15a(3) =385a(4) =137593a(5) =106908087

External references