Number of nX4 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.

A224387

Number of nX4 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.

Terms

    a(0) =35a(1) =1225a(2) =27790a(3) =497958a(4) =8573507a(5) =152271025a(6) =2780848289a(7) =51325449985a(8) =949582166068

External references