A249831 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 2 | | 1 |
| | | | | | | | | | 6 | | 1 | | 2 |
| | | | | | | | | 6 | | 3 | | 2 | | 6 |
| | | | | | | | 30 | | 12 | | 1 | | 6 | | 6 |
| | | | | | | 5 | | 60 | | 4 | | 3 | | 6 | | 30 |
| | | | | | 35 | | 10 | | 20 | | 1 | | 12 | | 30 | | 5 |
| | | | | 280 | | 70 | | 30 | | 5 | | 4 | | 60 | | 5 | | 35 |
| | | | 2520 | | 140 | | 210 | | 30 | | 1 | | 20 | | 10 | | 35 | | 70 |
| | | 252 | | 1260 | | 420 | | 210 | | 6 | | 5 | | 30 | | 70 | | 70 | | 70 |
| | 2772 | | 126 | | 420 | | 420 | | 42 | | 1 | | 30 | | 210 | | 35 | | 70 | | 7 |
|
A249831 as a square array
| 1 | 2 | 6 | 6 | 30 | 5 | 35 | 280 | 2520 | 252 | 2772
| | 1 | 1 | 3 | 12 | 60 | 10 | 70 | 140 | 1260 | 126
| | 2 | 2 | 1 | 4 | 20 | 30 | 210 | 420 | 420
| | 6 | 6 | 3 | 1 | 5 | 30 | 210 | 420
| | 6 | 6 | 12 | 4 | 1 | 6 | 42
| | 30 | 30 | 60 | 20 | 5 | 1
| | 5 | 5 | 10 | 30 | 30
| | 35 | 35 | 70 | 210
| | 70 | 70 | 35
| | 70 | 70
| | 7
|
A249831 as an upper right triangle
| 1 | 2 | 6 | 6 | 30 | 5 | 35 | 280 | 2520 | 252 | 2772
| | 1 | 1 | 3 | 12 | 60 | 10 | 70 | 140 | 1260 | 126
| | | 2 | 2 | 1 | 4 | 20 | 30 | 210 | 420 | 420
| | | | 6 | 6 | 3 | 1 | 5 | 30 | 210 | 420
| | | | | 6 | 6 | 12 | 4 | 1 | 6 | 42
| | | | | | 30 | 30 | 60 | 20 | 5 | 1
| | | | | | | 5 | 5 | 10 | 30 | 30
| | | | | | | | 35 | 35 | 70 | 210
| | | | | | | | | 70 | 70 | 35
| | | | | | | | | | 70 | 70
| | | | | | | | | | | 7
|
|
