Number of nXnXn triangular 0..5 arrays with every horizontal row nondecreasing, first elements of rows nonincreasing, last elements of rows nondecreasing, and every row having the same average value.

A215179

Number of nXnXn triangular 0..5 arrays with every horizontal row nondecreasing, first elements of rows nonincreasing, last elements of rows nondecreasing, and every row having the same average value.

Terms

    a(0) =6a(1) =12a(2) =38a(3) =192a(4) =1558a(5) =18940a(6) =364970a(7) =10283548a(8) =429504540a(9) =25437005278

External references