Number of n X n 0..2 arrays with rows unimodal and antidiagonals nondecreasing.
A224368
Number of n X n 0..2 arrays with rows unimodal and antidiagonals nondecreasing.
Terms
- a(0) =3a(1) =54a(2) =1838a(3) =77793a(4) =3607078a(5) =174854516a(6) =8684742989a(7) =437757725110
External references
- oeis: A224368