Number of n X n 0..3 arrays with rows unimodal and antidiagonals nondecreasing.
A224198
Number of n X n 0..3 arrays with rows unimodal and antidiagonals nondecreasing.
Terms
- a(0) =4a(1) =160a(2) =16060a(3) =2411246a(4) =451319098a(5) =96914926654
External references
- oeis: A224198