Numbers k such that 6*10^(2*k) + 6*10^k + 1 is prime.
A309741
Numbers k such that 6*10^(2*k) + 6*10^k + 1 is prime.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =4a(4) =22a(5) =133a(6) =567a(7) =14739a(8) =25390
External references
- oeis: A309741
A309741
Numbers k such that 6*10^(2*k) + 6*10^k + 1 is prime.