Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically.
A207236
Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically.
Terms
- a(0) =2a(1) =16a(2) =102a(3) =987a(4) =13876a(5) =197256a(6) =3510185a(7) =71594896a(8) =1760487825a(9) =47844199134
External references
- oeis: A207236