Size?
5
 Lower Pascal Matrix
           1           0           0           0           0
           1           1           0           0           0
           1           2           1           0           0
           1           3           3           1           0
           1           4           6           4           1
 Upper Pascal Matrix
           1           1           1           1           1
           0           1           2           3           4
           0           0           1           3           6
           0           0           0           1           4
           0           0           0           0           1
 Symmetric Pascal Matrix
           1           1           1           1           1
           1           2           3           4           5
           1           3           6          10          15
           1           4          10          20          35
           1           5          15          35          70