A066201 formatted as a triangular array:
| | | | | | | | | | | 1 | | | | | | | | | | | |
| | | | | | | | | | 1 | | 1 | | | | | | | | | | |
| | | | | | | | | 1 | | 2 | | 2 | | | | | | | | | |
| | | | | | | | 1 | | 3 | | 4 | | 4 | | | | | | | | |
| | | | | | | 1 | | 4 | | 6 | | 7 | | 7 | | | | | | | |
| | | | | | 1 | | 5 | | 8 | | 2 | | 3 | | 3 | | | | | | |
| | | | | 1 | | 6 | | 10 | | 3 | | 7 | | 8 | | 8 | | | | | |
| | | | 1 | | 7 | | 12 | | 4 | | 9 | | 13 | | 14 | | 14 | | | | |
| | | 1 | | 8 | | 14 | | 5 | | 11 | | 2 | | 20 | | 21 | | 21 | | | |
| | 1 | | 9 | | 16 | | 6 | | 13 | | 3 | | 10 | | 12 | | 13 | | 13 | | |
| 1 | | 10 | | 18 | | 7 | | 15 | | 4 | | 12 | | 19 | | 21 | | 22 | | 22 | |
| 1 | | 11 | | 20 | | 8 | | 17 | | 5 | | 14 | | 2 | | 29 | | 11 | | 12 | | 12 |
A066201 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | |
| 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | | |
| 4 | 7 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | | | |
| 7 | 3 | 7 | 9 | 11 | 13 | 15 | 17 | | | | |
| 3 | 8 | 13 | 2 | 3 | 4 | 5 | | | | | |
| 8 | 14 | 20 | 10 | 12 | 14 | | | | | | |
| 14 | 21 | 12 | 19 | 2 | | | | | | | |
| 21 | 13 | 21 | 29 | | | | | | | | |
| 13 | 22 | 11 | | | | | | | | | |
| 22 | 12 | | | | | | | | | | |
| 12 | | | | | | | | | | | |
A066201 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 |
| | | 4 | 7 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| | | | 7 | 3 | 7 | 9 | 11 | 13 | 15 | 17 |
| | | | | 3 | 8 | 13 | 2 | 3 | 4 | 5 |
| | | | | | 8 | 14 | 20 | 10 | 12 | 14 |
| | | | | | | 14 | 21 | 12 | 19 | 2 |
| | | | | | | | 21 | 13 | 21 | 29 |
| | | | | | | | | 13 | 22 | 11 |
| | | | | | | | | | 22 | 12 |
| | | | | | | | | | | 12 |
|
