Number of nX3 0..3 arrays with row sums nondecreasing and column sums unimodal.

A224121

Number of nX3 0..3 arrays with row sums nondecreasing and column sums unimodal.

Terms

    a(0) =50a(1) =1747a(2) =47059a(3) =1070499a(4) =21632718a(5) =400993828a(6) =6962188526a(7) =114852977638

External references