a(n) is the greatest prime factor of a(n-2)^2 + a(n-1)^2 where a(1)=2 and a(2)=3.
A361520
a(n) is the greatest prime factor of a(n-2)^2 + a(n-1)^2 where a(1)=2 and a(2)=3.
Terms
- a(0) =2a(1) =3a(2) =13a(3) =89a(4) =809a(5) =349a(6) =409a(7) =144541a(8) =10446133981
External references
- oeis: A361520