214944domain: NAppears in sequencesNumber of 3Xn arrays containing n copies of 0..3-1 with no element 1 greater than its north, west or northwest neighbor modulo 3 and the upper left element equal to 0.at n=12A266833Number of Hamiltonian circuits within parallelograms of size 3 X n on the triangular lattice.at n=10A339850