Primes of the form 2^n + n + 2.A187733Primes of the form 2^n + n + 2.Terms a(0) =3a(1) =5a(2) =13a(3) =137a(4) =523a(5) =524309a(6) =134217757a(7) =8589934627External referencesoeis: A187733