Copies of 1,3,7 and 9 cyclically such that every partial concatenation is a prime.
A110782
Copies of 1,3,7 and 9 cyclically such that every partial concatenation is a prime.
Terms
- a(0) =11a(1) =3a(2) =777a(3) =999a(4) =11a(5) =33333333
External references
- oeis: A110782