Nonprimes k such that k^2 - sopfr(k)^2 is a square, where sopfr = A001414.
A385885
Nonprimes k such that k^2 - sopfr(k)^2 is a square, where sopfr = A001414.
Terms
- a(0) =1a(1) =4a(2) =366a(3) =1095a(4) =51846a(5) =258410a(6) =982815a(7) =10653351
External references
- oeis: A385885