Number of nX6 0..1 arrays with every element equal to 1, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero.
A301613
Number of nX6 0..1 arrays with every element equal to 1, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero.
Terms
- a(0) =5a(1) =361a(2) =12467a(3) =421025a(4) =14345706a(5) =488491106a(6) =16632517333a(7) =566336198475
External references
- oeis: A301613