Number of 4Xn 0..3 arrays with rows unimodal and antidiagonals nondecreasing.

A224206

Number of 4Xn 0..3 arrays with rows unimodal and antidiagonals nondecreasing.

Terms

    a(0) =256a(1) =16000a(2) =263516a(3) =2411246a(4) =16355242a(5) =93052770a(6) =475218035a(7) =2252100875a(8) =10026501335a(9) =42033573628a(10) =165872759545a(11) =616278459399

External references