Number of n X 4 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.
A286975
Number of n X 4 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.
Terms
- a(0) =0a(1) =30a(2) =538a(3) =8270a(4) =123706a(5) =1853532a(6) =27938670a(7) =424161696a(8) =6473516290a(9) =99212813068
External references
- oeis: A286975