Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.
A289647
Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.
Terms
- a(0) =0a(1) =44a(2) =607a(3) =8554a(4) =121162a(5) =1756800a(6) =25760875a(7) =382162921a(8) =5717697619a(9) =86172849366
External references
- oeis: A289647