Number of (n+1)X(3+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements.
A251486
Number of (n+1)X(3+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements.
Terms
- a(0) =50576a(1) =10046784a(2) =1996407424a(3) =396684056960
External references
- oeis: A251486