Numbers n such that 143*2^n-1 is prime.

Terms

a(0) =2a(1) =4a(2) =6a(3) =8a(4) =12a(5) =18a(6) =26a(7) =32a(8) =34a(9) =36a(10) =42a(11) =60a(12) =78a(13) =82a(14) =84a(15) =88a(16) =154a(17) =174a(18) =208a(19) =256a(20) =366a(21) =448a(22) =478a(23) =746a(24) =1178a(25) =1290a(26) =2284a(27) =3606a(28) =35706a(29) =36920