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

Terms

a(0) =1a(1) =3a(2) =4a(3) =6a(4) =8a(5) =9a(6) =10a(7) =14a(8) =23a(9) =26a(10) =28a(11) =35a(12) =44a(13) =46a(14) =50a(15) =55a(16) =60a(17) =63a(18) =65a(19) =78a(20) =99a(21) =100a(22) =106a(23) =111a(24) =163a(25) =178a(26) =180a(27) =364a(28) =569a(29) =825