Number of nX7 0..1 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.
A267643
Number of nX7 0..1 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.
Terms
- a(0) =15a(1) =450a(2) =2829a(3) =32303a(4) =128441a(5) =1117207a(6) =3696933a(7) =30649693a(8) =90914453a(9) =784186403a(10) =2141552549a(11) =19980003873a(12) =50876741513a(13) =520249434779
External references
- oeis: A267643