|
%I #7 Sep 08 2022 08:45:53
%S 5,449,144114913197948929,5070602400617769700807459995649,
%T 11417981541647673977863886842678355104249151489
%N Primes of the form 4^n*(2^n-1)+1.
%C a(6) has 288 digits.
%F a(n) = 8^A098856(n)-4^A098856(n)+1.
%o (Magma)[a: n in [0..350]|IsPrime(a) where a is 8^n-4^n+1^n]
%Y Cf. A098856, A155629
%K nonn,less
%O 1,1
%A _Vincenzo Librandi_, Dec 09 2010
| 