Numbers k such that 2^k + 3^(k-1) is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =10a(8) =12a(9) =13a(10) =16a(11) =18a(12) =23a(13) =33a(14) =34a(15) =36a(16) =37a(17) =47a(18) =48a(19) =60a(20) =64a(21) =81a(22) =102a(23) =155a(24) =160a(25) =174a(26) =222a(27) =226a(28) =237a(29) =251