Numbers k such that (10^k + 41)/3 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =8a(6) =11a(7) =13a(8) =19a(9) =46a(10) =70a(11) =98a(12) =152a(13) =187a(14) =364a(15) =425a(16) =601a(17) =665a(18) =1837a(19) =2267a(20) =7691a(21) =10246a(22) =19988a(23) =54290a(24) =58571a(25) =181996