Number of nX5 0..1 arrays with every element equal to 1, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero.
A301612
Number of nX5 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) =3a(1) =111a(2) =2131a(3) =40085a(4) =758338a(5) =14345706a(6) =271301458a(7) =5131197358a(8) =97045266159
External references
- oeis: A301612