A155864 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | 1 | | 6 | | 6 | | 1 |
| | | | | | | | 1 | | 12 | | 24 | | 12 | | 1 |
| | | | | | | 1 | | 20 | | 60 | | 60 | | 20 | | 1 |
| | | | | | 1 | | 30 | | 120 | | 180 | | 120 | | 30 | | 1 |
| | | | | 1 | | 42 | | 210 | | 420 | | 420 | | 210 | | 42 | | 1 |
| | | | 1 | | 56 | | 336 | | 840 | | 1120 | | 840 | | 336 | | 56 | | 1 |
| | | 1 | | 72 | | 504 | | 1512 | | 2520 | | 2520 | | 1512 | | 504 | | 72 | | 1 |
| | 1 | | 90 | | 720 | | 2520 | | 5040 | | 6300 | | 5040 | | 2520 | | 720 | | 90 | | 1 |
|
A155864 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 6 | 12 | 20 | 30 | 42 | 56 | 72 | 90
| | 1 | 6 | 24 | 60 | 120 | 210 | 336 | 504 | 720
| | 1 | 12 | 60 | 180 | 420 | 840 | 1512 | 2520
| | 1 | 20 | 120 | 420 | 1120 | 2520 | 5040
| | 1 | 30 | 210 | 840 | 2520 | 6300
| | 1 | 42 | 336 | 1512 | 5040
| | 1 | 56 | 504 | 2520
| | 1 | 72 | 720
| | 1 | 90
| | 1
|
A155864 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 6 | 12 | 20 | 30 | 42 | 56 | 72 | 90
| | | 1 | 6 | 24 | 60 | 120 | 210 | 336 | 504 | 720
| | | | 1 | 12 | 60 | 180 | 420 | 840 | 1512 | 2520
| | | | | 1 | 20 | 120 | 420 | 1120 | 2520 | 5040
| | | | | | 1 | 30 | 210 | 840 | 2520 | 6300
| | | | | | | 1 | 42 | 336 | 1512 | 5040
| | | | | | | | 1 | 56 | 504 | 2520
| | | | | | | | | 1 | 72 | 720
| | | | | | | | | | 1 | 90
| | | | | | | | | | | 1
|
|
