Numbers k such that 10^k - prime(k) is prime.

A110066

Numbers k such that 10^k - prime(k) is prime.

Terms

    a(0) =2a(1) =5a(2) =40a(3) =69a(4) =586a(5) =927a(6) =1393a(7) =11411a(8) =32741a(9) =79040

External references