5539434

Appears in sequences

• Number of lower triangles of an n X n 0..n array with all row sums equal to the length of the row and all column sums equal to the length of the column.at n=6A195638
• Number of lower triangles of an n X n 0..6 array with all row sums equal to the length of the row and all column sums equal to the length of the column.at n=6A195642
• Number of lower triangles of an n X n 0..7 array with all row sums equal to the length of the row and all column sums equal to the length of the column.at n=6A195643