Numbers k such that (32*10^k + 319)/9 is prime.

Terms

a(0) =1a(1) =4a(2) =5a(3) =7a(4) =8a(5) =10a(6) =14a(7) =20a(8) =44a(9) =76a(10) =88a(11) =110a(12) =121a(13) =1469a(14) =1535a(15) =5030a(16) =16391a(17) =19592a(18) =25265a(19) =25819a(20) =54458a(21) =68320