Number of n X n 0..2 arrays with rows nondecreasing and antidiagonals unimodal.
A224006
Number of n X n 0..2 arrays with rows nondecreasing and antidiagonals unimodal.
Terms
- a(0) =1a(1) =3a(2) =36a(3) =868a(4) =28541a(5) =1108969a(6) =47735665a(7) =2200064042a(8) =106468976628
External references
- oeis: A224006