Numbers k such that 3^k + (-2)^k is prime.

Terms

a(0) =0a(1) =2a(2) =3a(3) =4a(4) =5a(5) =17a(6) =29a(7) =31a(8) =53a(9) =59a(10) =101a(11) =277a(12) =647a(13) =1061a(14) =2381a(15) =2833a(16) =3613a(17) =3853a(18) =3929a(19) =5297a(20) =7417a(21) =90217a(22) =122219a(23) =173191a(24) =256199a(25) =336353a(26) =485977a(27) =591827a(28) =1059503