A109449 formatted as a triangular array:
| | | | | | | | | 1 | | | | | | | | | |
| | | | | | | | 1 | | 1 | | | | | | | | |
| | | | | | | 1 | | 2 | | 1 | | | | | | | |
| | | | | | 2 | | 3 | | 3 | | 1 | | | | | | |
| | | | | 5 | | 8 | | 6 | | 4 | | 1 | | | | | |
| | | | 16 | | 25 | | 20 | | 10 | | 5 | | 1 | | | | |
| | | 61 | | 96 | | 75 | | 40 | | 15 | | 6 | | 1 | | | |
| | 272 | | 427 | | 336 | | 175 | | 70 | | 21 | | 7 | | 1 | | |
| 1385 | | 2176 | | 1708 | | 896 | | 350 | | 112 | | 28 | | 8 | | 1 | |
| 7936 | | 12465 | | 9792 | | 5124 | | 2016 | | 630 | | 168 | | 36 | | 9 | | 1 |
A109449 formatted as a square array:
| 1 | 1 | 1 | 2 | 5 | 16 | 61 | 272 | 1385 | 7936 |
| 1 | 2 | 3 | 8 | 25 | 96 | 427 | 2176 | 12465 | |
| 1 | 3 | 6 | 20 | 75 | 336 | 1708 | 9792 | | |
| 1 | 4 | 10 | 40 | 175 | 896 | 5124 | | | |
| 1 | 5 | 15 | 70 | 350 | 2016 | | | | |
| 1 | 6 | 21 | 112 | 630 | | | | | |
| 1 | 7 | 28 | 168 | | | | | | |
| 1 | 8 | 36 | | | | | | | |
| 1 | 9 | | | | | | | | |
| 1 | | | | | | | | | |
A109449 formatted as an upper right triangle:
| 1 | 1 | 1 | 2 | 5 | 16 | 61 | 272 | 1385 | 7936 |
| 1 | 2 | 3 | 8 | 25 | 96 | 427 | 2176 | 12465 |
| | 1 | 3 | 6 | 20 | 75 | 336 | 1708 | 9792 |
| | | 1 | 4 | 10 | 40 | 175 | 896 | 5124 |
| | | | 1 | 5 | 15 | 70 | 350 | 2016 |
| | | | | 1 | 6 | 21 | 112 | 630 |
| | | | | | 1 | 7 | 28 | 168 |
| | | | | | | 1 | 8 | 36 |
| | | | | | | | 1 | 9 |
| | | | | | | | | 1 |
|
