Numbers k such that 16*10^k + 1 is prime.

Terms

a(0) =0a(1) =2a(2) =3a(3) =4a(4) =18a(5) =21a(6) =36a(7) =58a(8) =68a(9) =78a(10) =84a(11) =94a(12) =150a(13) =178a(14) =190a(15) =591a(16) =686a(17) =812a(18) =840a(19) =2308a(20) =2530a(21) =2884a(22) =4311a(23) =6134a(24) =7695a(25) =8004a(26) =8109a(27) =9777a(28) =15570a(29) =17505