Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

A300092

Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =18a(2) =19a(3) =56a(4) =203a(5) =672a(6) =2168a(7) =7287a(8) =25652a(9) =88027a(10) =306375a(11) =1070802a(12) =3744286a(13) =13105674a(14) =45926952a(15) =161012379a(16) =564504898a(17) =1979855821a(18) =6944885024a(19) =24362969123a(20) =85473134558a(21) =299883787584

External references