Numbers k such that (74*10^k + 313)/9 is prime.

Terms

a(0) =0a(1) =2a(2) =6a(3) =15a(4) =18a(5) =26a(6) =51a(7) =75a(8) =86a(9) =114a(10) =257a(11) =275a(12) =537a(13) =753a(14) =914a(15) =1944a(16) =18431a(17) =18741a(18) =21281a(19) =28272a(20) =31002a(21) =71621a(22) =84170a(23) =110961