Number of nX7 0..1 arrays with every element unequal to 0, 1 or 2 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

A317763

Number of nX7 0..1 arrays with every element unequal to 0, 1 or 2 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =64a(1) =190a(2) =196a(3) =232a(4) =302a(5) =425a(6) =639a(7) =1012a(8) =1663a(9) =2801a(10) =4792a(11) =8278a(12) =14385a(13) =25088a(14) =43852a(15) =76756a(16) =134466a(17) =235697a(18) =413288a(19) =724863a(20) =1271539a(21) =2230756a(22) =3913889a(23) =6867349a(24) =12050002a(25) =21144516a(26) =37103735a(27) =65109496a(28) =114255232a(29) =200498730

External references