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

A202577

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

Terms

    a(0) =20a(1) =616a(2) =15688a(3) =343827a(4) =6776376a(5) =123282439a(6) =2108296388a(7) =34358272840a(8) =538646901836

External references