Numbers k such that (754*10^k - 7)/9 is prime.

Terms

a(0) =0a(1) =2a(2) =3a(3) =5a(4) =6a(5) =9a(6) =30a(7) =38a(8) =66a(9) =110a(10) =135a(11) =168a(12) =470a(13) =477a(14) =654a(15) =1635a(16) =1875a(17) =2823a(18) =12162a(19) =23984a(20) =32859a(21) =33609a(22) =34814a(23) =39162a(24) =58748a(25) =82250a(26) =161816