Numbers k such that 4^k - 2^k - 3 is prime.

Terms

a(0) =3a(1) =7a(2) =13a(3) =15a(4) =21a(5) =73a(6) =231a(7) =301a(8) =493a(9) =895a(10) =955a(11) =4069a(12) =5057a(13) =5415a(14) =15325a(15) =19845a(16) =21603a(17) =24577a(18) =37877a(19) =40193a(20) =44283