Number of n X n 0..2 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.

A224304

Number of n X n 0..2 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.

Terms

    a(0) =3a(1) =54a(2) =1586a(3) =45453a(4) =1258372a(5) =33934344a(6) =911404794a(7) =24751091876a(8) =685844521863

External references