a(n) is the least k such that k^(2^n)*(k^(2^n) - 1) + 1 is prime.
A246119
a(n) is the least k such that k^(2^n)*(k^(2^n) - 1) + 1 is prime.
Terms
- a(0) =2a(1) =2a(2) =2a(3) =5a(4) =4a(5) =2a(6) =5a(7) =196a(8) =14a(9) =129a(10) =424a(11) =484a(12) =22a(13) =5164a(14) =7726a(15) =13325a(16) =96873a(17) =192098a(18) =712012a(19) =123447
External references
- oeis: A246119