Number of n X n 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.

A224275

Number of n X n 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.

Terms

    a(0) =4a(1) =160a(2) =13683a(3) =1334973a(4) =137489538a(5) =14587480744

External references