Numbers k such that (73*10^k - 91)/9 is prime.

Terms

a(0) =1a(1) =3a(2) =4a(3) =6a(4) =7a(5) =10a(6) =63a(7) =84a(8) =181a(9) =186a(10) =205a(11) =235a(12) =426a(13) =612a(14) =3379a(15) =4203a(16) =4410a(17) =9091a(18) =12640a(19) =26386a(20) =39069a(21) =45451