Numbers k such that 10^(2k)/2 + 10^k + 1 are prime.
A296446
Numbers k such that 10^(2k)/2 + 10^k + 1 are prime.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =4a(4) =7a(5) =10a(6) =56a(7) =154a(8) =170a(9) =14728
External references
- oeis: A296446
A296446
Numbers k such that 10^(2k)/2 + 10^k + 1 are prime.