a(n) is the smallest number such that a(n)^2 + 1 is divisible by A002144(1)* A002144(2)*...* A002144(n).
A181413
a(n) is the smallest number such that a(n)^2 + 1 is divisible by A002144(1)* A002144(2)*...* A002144(n).
Terms
- a(0) =2a(1) =8a(2) =47a(3) =2163a(4) =18543a(5) =241727a(6) =3101272a(7) =842894268a(8) =8245041748a(9) =521781374353
External references
- oeis: A181413