15676416domain: NAppears in sequencesNumber of primitive polynomials of degree n over GF(9).at n=9A027745a(n) = 6^n * n*(n+1).at n=7A116164Number of n X 1 0..6 arrays with some element plus some horizontally or vertically adjacent neighbor totalling six exactly once.at n=8A269895a(n) = phi(n^n - 1)/n where phi is A000010.at n=7A319183