2139830784domain: NAppears in sequencesNumber of strings of length n over Z_6 with trace 1 and subtrace 2.at n=13A073979Number of strings of length n over Z_6 with trace 3 and subtrace 4.at n=13A073993Diagonal of (1 - 9 x y) / ((1 - 3 y - 2 x + 3 y^2 + 8 x^2 y) * (1 - u - z) * (1 - v - w)).at n=5A276013