Numbers n such that 207*2^n-1 is prime.

Terms

a(0) =2a(1) =9a(2) =12a(3) =17a(4) =20a(5) =21a(6) =50a(7) =53a(8) =132a(9) =168a(10) =341a(11) =360a(12) =381a(13) =501a(14) =1065a(15) =1169a(16) =1545a(17) =2109a(18) =2520a(19) =2661a(20) =3149a(21) =4077a(22) =11252a(23) =21588a(24) =21692a(25) =39509a(26) =52685a(27) =67196a(28) =87708a(29) =232436