Numbers k such that 6*10^k+1 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =8a(4) =9a(5) =15a(6) =20a(7) =26a(8) =38a(9) =45a(10) =65a(11) =112a(12) =244a(13) =303a(14) =393a(15) =560a(16) =839a(17) =1009a(18) =1019a(19) =1173a(20) =1334a(21) =2236a(22) =2629a(23) =4426a(24) =8848a(25) =20812a(26) =37744a(27) =72926a(28) =86287a(29) =231617