Composite squarefree numbers k such that k^2+1 is divisible by p-1, where p are all the prime factors of k.
A306723
Composite squarefree numbers k such that k^2+1 is divisible by p-1, where p are all the prime factors of k.
Terms
- a(0) =33a(1) =36003a(2) =426747a(3) =220067817
External references
- oeis: A306723