Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254417
Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =2180a(1) =25589a(2) =423141a(3) =6683795a(4) =106821947a(5) =1701224592a(6) =27127649888a(7) =432529456546
External references
- oeis: A254417