Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 1 and 1 0 1 vertically.
A207757
Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 1 and 1 0 1 vertically.
Terms
- a(0) =2a(1) =16a(2) =82a(3) =663a(4) =6552a(5) =56651a(6) =887114a(7) =17141340a(8) =265932767a(9) =7838599272a(10) =322656587622
External references
- oeis: A207757