20349075domain: NAppears in sequencesNumber of distinct n X 2 toroidal 0..4 arrays.at n=5A184285Table read by antidiagonals: T(n,k) = number of distinct n X k toroidal 0..4 arrays.at n=22A184288Table read by antidiagonals: T(n,k) = number of distinct n X k toroidal 0..4 arrays.at n=26A184288