Numbers k such that (412*10^k - 7)/9 is prime.

Terms

a(0) =1a(1) =16a(2) =22a(3) =26a(4) =29a(5) =55a(6) =83a(7) =110a(8) =128a(9) =176a(10) =187a(11) =566a(12) =1150a(13) =1405a(14) =3515a(15) =7763a(16) =14530a(17) =18398a(18) =26035a(19) =42166a(20) =85897