Numbers k such that 143*2^k+1 is prime.

Terms

a(0) =53a(1) =77a(2) =293a(3) =333a(4) =393a(5) =809a(6) =825a(7) =20973a(8) =85349a(9) =270285a(10) =459093a(11) =699189a(12) =859769a(13) =1650689