A063841 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | 1 | | 3 | | 4 | | 1 |
| | | | | | | 1 | | 4 | | 10 | | 11 | | 1 |
| | | | | | 1 | | 5 | | 20 | | 66 | | 34 | | 1 |
| | | | | 1 | | 6 | | 35 | | 276 | | 792 | | 156 | | 1 |
| | | | 1 | | 7 | | 56 | | 900 | | 10688 | | 25506 | | 1044 | | 1 |
| | | 1 | | 8 | | 84 | | 2451 | | 90005 | | 1601952 | | 2302938 | | 12346 | | 1 |
| | 1 | | 9 | | 120 | | 5831 | | 533358 | | 43571400 | | 892341888 | | 591901884 | | 274668 | | 1 |
|
A063841 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
| | 1 | 4 | 10 | 20 | 35 | 56 | 84 | 120
| | 1 | 11 | 66 | 276 | 900 | 2451 | 5831
| | 1 | 34 | 792 | 10688 | 90005 | 533358
| | 1 | 156 | 25506 | 1601952 | 43571400
| | 1 | 1044 | 2302938 | 892341888
| | 1 | 12346 | 591901884
| | 1 | 274668
| | 1
|
A063841 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
| | | 1 | 4 | 10 | 20 | 35 | 56 | 84 | 120
| | | | 1 | 11 | 66 | 276 | 900 | 2451 | 5831
| | | | | 1 | 34 | 792 | 10688 | 90005 | 533358
| | | | | | 1 | 156 | 25506 | 1601952 | 43571400
| | | | | | | 1 | 1044 | 2302938 | 892341888
| | | | | | | | 1 | 12346 | 591901884
| | | | | | | | | 1 | 274668
| | | | | | | | | | 1
|
|
