Number of (n+2)X4 0..4 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.
A186089
Number of (n+2)X4 0..4 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.
Terms
- a(0) =1252889a(1) =22559052a(2) =280102672a(3) =2743553694a(4) =22408644868a(5) =157927508610a(6) =983600385660
External references
- oeis: A186089