A131129 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 3 | | 4 | | 1 |
| | | | | | | 3 | | 9 | | 7 | | 1 |
| | | | | | 3 | | 12 | | 18 | | 10 | | 1 |
| | | | | 3 | | 15 | | 30 | | 30 | | 13 | | 1 |
| | | | 3 | | 18 | | 45 | | 60 | | 45 | | 16 | | 1 |
| | | 3 | | 21 | | 63 | | 105 | | 105 | | 63 | | 19 | | 1 |
| | 3 | | 24 | | 84 | | 168 | | 210 | | 168 | | 84 | | 22 | | 1 |
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A131129 as a square array
| 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3
| | 1 | 4 | 9 | 12 | 15 | 18 | 21 | 24
| | 1 | 7 | 18 | 30 | 45 | 63 | 84
| | 1 | 10 | 30 | 60 | 105 | 168
| | 1 | 13 | 45 | 105 | 210
| | 1 | 16 | 63 | 168
| | 1 | 19 | 84
| | 1 | 22
| | 1
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A131129 as an upper right triangle
| 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3
| | 1 | 4 | 9 | 12 | 15 | 18 | 21 | 24
| | | 1 | 7 | 18 | 30 | 45 | 63 | 84
| | | | 1 | 10 | 30 | 60 | 105 | 168
| | | | | 1 | 13 | 45 | 105 | 210
| | | | | | 1 | 16 | 63 | 168
| | | | | | | 1 | 19 | 84
| | | | | | | | 1 | 22
| | | | | | | | | 1
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