A128176 formatted as a triangular array:
| | | | | | | | | 1 | | | | | | | | | |
| | | | | | | | 1 | | 1 | | | | | | | | |
| | | | | | | 2 | | 2 | | 1 | | | | | | | |
| | | | | | 2 | | 4 | | 3 | | 1 | | | | | | |
| | | | | 3 | | 6 | | 7 | | 4 | | 1 | | | | | |
| | | | 3 | | 9 | | 13 | | 11 | | 5 | | 1 | | | | |
| | | 4 | | 12 | | 22 | | 24 | | 16 | | 6 | | 1 | | | |
| | 4 | | 16 | | 34 | | 46 | | 40 | | 22 | | 7 | | 1 | | |
| 5 | | 20 | | 50 | | 80 | | 86 | | 62 | | 29 | | 8 | | 1 | |
| 5 | | 25 | | 70 | | 130 | | 166 | | 148 | | 91 | | 37 | | 9 | | 1 |
A128176 formatted as a square array:
| 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 |
| 1 | 2 | 4 | 6 | 9 | 12 | 16 | 20 | 25 | |
| 1 | 3 | 7 | 13 | 22 | 34 | 50 | 70 | | |
| 1 | 4 | 11 | 24 | 46 | 80 | 130 | | | |
| 1 | 5 | 16 | 40 | 86 | 166 | | | | |
| 1 | 6 | 22 | 62 | 148 | | | | | |
| 1 | 7 | 29 | 91 | | | | | | |
| 1 | 8 | 37 | | | | | | | |
| 1 | 9 | | | | | | | | |
| 1 | | | | | | | | | |
A128176 formatted as an upper right triangle:
| 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 |
| 1 | 2 | 4 | 6 | 9 | 12 | 16 | 20 | 25 |
| | 1 | 3 | 7 | 13 | 22 | 34 | 50 | 70 |
| | | 1 | 4 | 11 | 24 | 46 | 80 | 130 |
| | | | 1 | 5 | 16 | 40 | 86 | 166 |
| | | | | 1 | 6 | 22 | 62 | 148 |
| | | | | | 1 | 7 | 29 | 91 |
| | | | | | | 1 | 8 | 37 |
| | | | | | | | 1 | 9 |
| | | | | | | | | 1 |
|
