Number of nX7 0..3 arrays with rows and antidiagonals unimodal and columns nondecreasing.
A223863
Number of nX7 0..3 arrays with rows and antidiagonals unimodal and columns nondecreasing.
Terms
- a(0) =1163a(1) =165212a(2) =6818350a(3) =144081276a(4) =2030417942a(5) =21476594002a(6) =181330154458
External references
- oeis: A223863