Number of nX3 0..3 arrays with rows, columns and antidiagonals unimodal and diagonals nondecreasing.

A224059

Number of nX3 0..3 arrays with rows, columns and antidiagonals unimodal and diagonals nondecreasing.

Terms

    a(0) =50a(1) =984a(2) =8854a(3) =58814a(4) =324702a(5) =1557606a(6) =6643979a(7) =25596389a(8) =90177585a(9) =293585050a(10) =891208427a(11) =2542007013a(12) =6857916671a(13) =17598839738a(14) =43168340844a(15) =101638636169a(16) =230538577645a(17) =505352928460

External references