531414domain: NAppears in sequencesa(n) = n^4 - n.at n=27A058895a(n) = 729*n^2 - 27.at n=26A158655Number of conjugacy classes in GL(n,27).at n=4A182612Monotonic ordering of nonnegative differences 9^i-3^j, for 40>= i>=0, j>=0.at n=39A192158