Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

A299245

Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =18a(2) =18a(3) =55a(4) =192a(5) =652a(6) =2002a(7) =6741a(8) =23631a(9) =79836a(10) =274822a(11) =954282a(12) =3306096a(13) =11462662a(14) =39849725a(15) =138545796a(16) =481560761a(17) =1674865229a(18) =5826326576a(19) =20267377567a(20) =70508970351a(21) =245315398653a(22) =853512851244

External references