Number of n X 3 0..3 arrays with rows, diagonals and antidiagonals unimodal.
A223871
Number of n X 3 0..3 arrays with rows, diagonals and antidiagonals unimodal.
Terms
- a(0) =50a(1) =2500a(2) =99223a(3) =3863372a(4) =152918517a(5) =6066668157a(6) =240345697904
External references
- oeis: A223871