2679246domain: NAppears in sequencesTriangle read by rows: T(n,k) is the number of non-isomorphic colorings of a toroidal n X k grid using exactly three colors under translational symmetry, 1 <= k <= n.at n=9A294685Number of colorings of a toroidal n X n grid using exactly three colors under translational symmetry.at n=3A376823