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

A305036

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

Terms

    a(0) =8a(1) =5a(2) =7a(3) =19a(4) =26a(5) =61a(6) =143a(7) =277a(8) =568a(9) =1244a(10) =2600a(11) =5369a(12) =11341a(13) =23905a(14) =49970a(15) =104796a(16) =220286a(17) =462165a(18) =969275a(19) =2034517a(20) =4270128a(21) =8959604a(22) =18801136a(23) =39456489a(24) =82798877a(25) =173748993a(26) =364613994a(27) =765145940a(28) =1605646822a(29) =3369435285

External references