A284731 as a triangular array
| | | | | | | 1 |
| | | | | | | 1 | | 1 |
| | | | | | 1 | | 2 | | 1 |
| | | | | 1 | | 5 | | 5 | | 1 |
| | | | 1 | | 14 | | 33 | | 14 | | 1 |
| | | 1 | | 42 | | 234 | | 238 | | 42 | | 1 |
| | 1 | | 132 | | 1706 | | 4146 | | 1782 | | 132 | | 1 |
|
A284731 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 5 | 14 | 42 | 132
| | 1 | 5 | 33 | 234 | 1706
| | 1 | 14 | 238 | 4146
| | 1 | 42 | 1782
| | 1 | 132
| | 1
|
A284731 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 5 | 14 | 42 | 132
| | | 1 | 5 | 33 | 234 | 1706
| | | | 1 | 14 | 238 | 4146
| | | | | 1 | 42 | 1782
| | | | | | 1 | 132
| | | | | | | 1
|
|
