a(1)=1, a(2)=1; for n > 2, a(n) is the largest noncomposite proper divisor of the concatenation of terms a(1) through a(n-1).
A322098
a(1)=1, a(2)=1; for n > 2, a(n) is the largest noncomposite proper divisor of the concatenation of terms a(1) through a(n-1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =37a(4) =43a(5) =439a(6) =31321a(7) =3555900001a(8) =3555900001
External references
- oeis: A322098