Numbers k such that (5*10^k + 91) / 3 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =10a(4) =19a(5) =35a(6) =43a(7) =80a(8) =107a(9) =143a(10) =199a(11) =218a(12) =255a(13) =304a(14) =353a(15) =560a(16) =904a(17) =996a(18) =1051a(19) =6141a(20) =8075a(21) =9913a(22) =11151a(23) =28469a(24) =75244a(25) =108960a(26) =122592a(27) =178206a(28) =187471a(29) =257431