Number of (n+2)X4 binary arrays avoiding patterns 010 and 101 in rows, columns and nw-to-se diagonals.

A203349

Number of (n+2)X4 binary arrays avoiding patterns 010 and 101 in rows, columns and nw-to-se diagonals.

Terms

    a(0) =244a(1) =998a(2) =3716a(3) =14068a(4) =53354a(5) =201506a(6) =761710a(7) =2880986a(8) =10892888a(9) =41189884a(10) =155750096a(11) =588937240a(12) =2226948992a(13) =8420752636a(14) =31841355064a(15) =120401617098a(16) =455274228532

External references