Numbers k such that 195*2^k+1 is prime.

Terms

a(0) =4a(1) =8a(2) =13a(3) =14a(4) =20a(5) =31a(6) =38a(7) =70a(8) =80a(9) =86a(10) =110a(11) =125a(12) =140a(13) =170a(14) =179a(15) =230a(16) =338a(17) =365a(18) =374a(19) =517a(20) =860a(21) =944a(22) =1045a(23) =1270a(24) =1861a(25) =3623a(26) =4414a(27) =10448a(28) =27766a(29) =30836