162001domain: NAppears in sequencesa(n) = n^4 + 5*n^2 + 1.at n=20A082113a(n) = 6n^3 + 1, solution z in Diophantine equation x^3 + y^3 = z^3 - 2. It may be considered a Fermat near miss by 2.at n=29A163827