27201459541domain: NAppears in sequencesLeast primes of the form k 4^n + (4^n-1)/3.at n=15A127598Least primes of the form k 4^n + (4^n-1)/3.at n=16A127598a(0) = 6; thereafter a(n) = 4*a(n-1) + 1.at n=16A323824