A137391 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 2 | | 4 | | 1 |
| | | | | | | | | 0 | | 12 | | 9 | | 1 |
| | | | | | | | 0 | | 24 | | 48 | | 16 | | 1 |
| | | | | | | 0 | | 0 | | 180 | | 140 | | 25 | | 1 |
| | | | | | 0 | | 0 | | 360 | | 840 | | 330 | | 36 | | 1 |
| | | | | 0 | | 0 | | 0 | | 3360 | | 2940 | | 672 | | 49 | | 1 |
| | | | 0 | | 0 | | 0 | | 6720 | | 18480 | | 8400 | | 1232 | | 64 | | 1 |
| | | 0 | | 0 | | 0 | | 0 | | 75600 | | 75600 | | 20664 | | 2088 | | 81 | | 1 |
| | 0 | | 0 | | 0 | | 0 | | 151200 | | 483840 | | 252000 | | 45360 | | 3330 |
|
A137391 as a square array
1 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 4 | 12 | 24 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 9 | 48 | 180 | 360 | 0 | 0 | 0 | 0
| 1 | 16 | 140 | 840 | 3360 | 6720 | 0 | 0
| 1 | 25 | 330 | 2940 | 18480 | 75600 | 151200
| 1 | 36 | 672 | 8400 | 75600 | 483840
| 1 | 49 | 1232 | 20664 | 252000
| 1 | 64 | 2088 | 45360
| 1 | 81 | 3330
| 1
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A137391 as an upper right triangle
1 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 4 | 12 | 24 | 0 | 0 | 0 | 0 | 0 | 0
| | | 1 | 9 | 48 | 180 | 360 | 0 | 0 | 0 | 0
| | | | 1 | 16 | 140 | 840 | 3360 | 6720 | 0 | 0
| | | | | 1 | 25 | 330 | 2940 | 18480 | 75600 | 151200
| | | | | | 1 | 36 | 672 | 8400 | 75600 | 483840
| | | | | | | 1 | 49 | 1232 | 20664 | 252000
| | | | | | | | 1 | 64 | 2088 | 45360
| | | | | | | | | 1 | 81 | 3330
| | | | | | | | | | 1
| | | | | | | | | |
|
|