A213940 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 1 | | 1 |
| | | | | | | | 1 | | 3 | | 2 | | 3 |
| | | | | | | 1 | | 3 | | 6 | | 6 | | 12 |
| | | | | | 1 | | 7 | | 20 | | 26 | | 30 | | 60 |
| | | | | 1 | | 8 | | 40 | | 93 | | 150 | | 180 | | 360 |
| | | | 1 | | 18 | | 106 | | 424 | | 633 | | 1050 | | 1260 | | 2520 |
| | | 1 | | 22 | | 304 | | 1180 | | 3260 | | 5040 | | 8400 | | 10080 | | 20160 |
| | 1 | | 46 | | 731 | | 4844 | | 16212 | | 29244 | | 45360 | | 75600 | | 90720 | | 181440 |
|
A213940 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 3 | 3 | 7 | 8 | 18 | 22 | 46
| | 1 | 2 | 6 | 20 | 40 | 106 | 304 | 731
| | 3 | 6 | 26 | 93 | 424 | 1180 | 4844
| | 12 | 30 | 150 | 633 | 3260 | 16212
| | 60 | 180 | 1050 | 5040 | 29244
| | 360 | 1260 | 8400 | 45360
| | 2520 | 10080 | 75600
| | 20160 | 90720
| | 181440
|
A213940 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 3 | 3 | 7 | 8 | 18 | 22 | 46
| | | 1 | 2 | 6 | 20 | 40 | 106 | 304 | 731
| | | | 3 | 6 | 26 | 93 | 424 | 1180 | 4844
| | | | | 12 | 30 | 150 | 633 | 3260 | 16212
| | | | | | 60 | 180 | 1050 | 5040 | 29244
| | | | | | | 360 | 1260 | 8400 | 45360
| | | | | | | | 2520 | 10080 | 75600
| | | | | | | | | 20160 | 90720
| | | | | | | | | | 181440
|
|
