a(n) is the smallest k such that exactly one of k*2^(2^n) - 2*k + 1 and k*2^(2^n) + 2*k - 1 is a prime.
A332847
a(n) is the smallest k such that exactly one of k*2^(2^n) - 2*k + 1 and k*2^(2^n) + 2*k - 1 is a prime.
Terms
- a(0) =1a(1) =4a(2) =1a(3) =1a(4) =1a(5) =3a(6) =3a(7) =10a(8) =17a(9) =8a(10) =83a(11) =92a(12) =525a(13) =1888a(14) =20a(15) =6804a(16) =11390
External references
- oeis: A332847