220882domain: NAppears in sequencesa(n) is the total number of k-reverses of n.at n=26A180249Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically.at n=5A207413Number of nX6 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically.at n=5A207417