Numbers k such that 75*2^k-1 is prime.

Terms

a(0) =1a(1) =3a(2) =5a(3) =6a(4) =18a(5) =19a(6) =20a(7) =22a(8) =28a(9) =29a(10) =39a(11) =43a(12) =49a(13) =75a(14) =85a(15) =92a(16) =111a(17) =126a(18) =136a(19) =159a(20) =162a(21) =237a(22) =349a(23) =381a(24) =767a(25) =969a(26) =1247a(27) =1893a(28) =1951a(29) =2363