Numbers k such that (77*10^k - 293)/9 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =10a(5) =11a(6) =29a(7) =35a(8) =52a(9) =56a(10) =106a(11) =217a(12) =580a(13) =673a(14) =808a(15) =1354a(16) =1666a(17) =3292a(18) =3770a(19) =8989a(20) =16525a(21) =24773a(22) =39301a(23) =125330a(24) =158407