Numbers k such that 8*10^k - 9 is prime.

Terms

a(0) =1a(1) =5a(2) =11a(3) =12a(4) =17a(5) =28a(6) =46a(7) =48a(8) =61a(9) =73a(10) =138a(11) =178a(12) =213a(13) =405a(14) =762a(15) =1053a(16) =1157a(17) =1427a(18) =2865a(19) =3148a(20) =3615a(21) =13447a(22) =48081