Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
A207740
Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
Terms
- a(0) =40a(1) =1600a(2) =20550a(3) =327075a(4) =5959350a(5) =113534330a(6) =2215586241a(7) =43590708750a(8) =861389821740
External references
- oeis: A207740