Copies of 1 and 7 alternately such that every partial concatenation is a prime.
A110776
Copies of 1 and 7 alternately such that every partial concatenation is a prime.
Terms
- a(0) =11a(1) =777a(2) =11a(3) =777777a(4) =111111111a(6) =111111111a(7) =777
External references
- oeis: A110776