383912domain: NAppears in sequencesBase 6 digits are, in order, the first n terms of the periodic sequence with initial period 1,2.at n=7A037483Number of cubic equations ax^3 + bx^2 + cx + d = 0 with integer coefficients |a|,|b|,|c|,|d| <= n, a <> 0, having three distinct real roots.at n=18A155191