Composite numbers q such that 2^q + q is prime.
A100556
Composite numbers q such that 2^q + q is prime.
Terms
- a(0) =9a(1) =15a(2) =39a(3) =75a(4) =81a(5) =735a(6) =1311a(7) =1881a(8) =3201a(9) =3225a(10) =11795a(11) =88071a(12) =204129a(13) =678561
External references
- oeis: A100556