Numbers n such that 8*10^n + 9 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =6a(5) =12a(6) =20a(7) =21a(8) =37a(9) =42a(10) =55a(11) =60a(12) =98a(13) =100a(14) =104a(15) =223a(16) =237a(17) =260a(18) =501a(19) =570a(20) =600a(21) =698a(22) =8857a(23) =20911a(24) =24345a(25) =31964a(26) =67742a(27) =162924