Numbers n such that 9*2^(2*n-1) - 1 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =8a(5) =11a(6) =22a(7) =32a(8) =50a(9) =55a(10) =80a(11) =106a(12) =155a(13) =172a(14) =208a(15) =235a(16) =391a(17) =436a(18) =470a(19) =776a(20) =1558a(21) =1675a(22) =2795a(23) =2908a(24) =2947a(25) =3970a(26) =4004a(27) =5774a(28) =6248a(29) =11278