Numbers k such that (67*10^k + 17)/3 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =11a(5) =20a(6) =21a(7) =32a(8) =33a(9) =41a(10) =93a(11) =187a(12) =265a(13) =380a(14) =1088a(15) =1459a(16) =1671a(17) =7328a(18) =11524a(19) =14167a(20) =21719a(21) =47439a(22) =74045