Number of nX7 0..1 arrays with every element equal to 1, 2 or 4 horizontally or vertically adjacent elements, with upper left element zero.
A301668
Number of nX7 0..1 arrays with every element equal to 1, 2 or 4 horizontally or vertically adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =421a(2) =5289a(3) =71564a(4) =1073621a(5) =15498505a(6) =225780260a(7) =3307561389a(8) =48158543096a(9) =703127937300
External references
- oeis: A301668