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A240801
as
a triangular array
1
1
3
3
12
12
15
75
120
60
105
630
1350
1200
360
945
6615
17640
22050
12600
2520
A240801
as
a square array
1
1
3
15
105
945
3
12
75
630
6615
12
120
1350
17640
60
1200
22050
360
12600
2520
A240801
as
an upper right triangle
1
1
3
15
105
945
3
12
75
630
6615
12
120
1350
17640
60
1200
22050
360
12600
2520