Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 1 vertically.
A208550
Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 1 vertically.
Terms
- a(0) =2a(1) =16a(2) =90a(3) =1089a(4) =10080a(5) =150544a(6) =1913940a(7) =33930625a(8) =544003170a(9) =11177987076a(10) =215177010048
External references
- oeis: A208550