168925domain: NAppears in sequencesUnmatched value maps: number of n X 4 binary arrays indicating the locations of corresponding elements not equal to any horizontal, vertical or antidiagonal neighbor in a random 0..1 n X 4 array.at n=7A219737Number of tilings of a 9 X n rectangle using 1 X 1 squares and L-tiles.at n=5A226543