Numbers n such that 225*2^n-1 is prime.

Terms

a(0) =1a(1) =23a(2) =25a(3) =53a(4) =65a(5) =139a(6) =149a(7) =481a(8) =613a(9) =1343a(10) =1601a(11) =2125a(12) =4385a(13) =9005a(14) =9169a(15) =57013a(16) =99821a(17) =113893a(18) =162653a(19) =206293a(20) =491135