A131270 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 1 | | 1 |
| | | | | | | | | | 1 | | 3 | | 1 | | 1 |
| | | | | | | | | 1 | | 3 | | 5 | | 1 | | 1 |
| | | | | | | | 1 | | 5 | | 5 | | 7 | | 1 | | 1 |
| | | | | | | 1 | | 5 | | 11 | | 7 | | 9 | | 1 | | 1 |
| | | | | | 1 | | 7 | | 11 | | 19 | | 9 | | 11 | | 1 | | 1 |
| | | | | 1 | | 7 | | 19 | | 19 | | 29 | | 11 | | 13 | | 1 | | 1 |
| | | | 1 | | 9 | | 19 | | 39 | | 29 | | 41 | | 13 | | 15 | | 1 | | 1 |
| | | 1 | | 9 | | 29 | | 39 | | 69 | | 41 | | 55 | | 15 | | 17 | | 1 | | 1 |
| | 1 | | 11 | | 29 | | 69 | | 69 | | 111 | | 55 | | 71 | | 17 | | 19 | | 1 | | 1 |
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A131270 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 3 | 3 | 5 | 5 | 7 | 7 | 9 | 9 | 11
| | 1 | 1 | 5 | 5 | 11 | 11 | 19 | 19 | 29 | 29
| | 1 | 1 | 7 | 7 | 19 | 19 | 39 | 39 | 69
| | 1 | 1 | 9 | 9 | 29 | 29 | 69 | 69
| | 1 | 1 | 11 | 11 | 41 | 41 | 111
| | 1 | 1 | 13 | 13 | 55 | 55
| | 1 | 1 | 15 | 15 | 71
| | 1 | 1 | 17 | 17
| | 1 | 1 | 19
| | 1 | 1
| | 1
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A131270 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 3 | 3 | 5 | 5 | 7 | 7 | 9 | 9 | 11
| | | 1 | 1 | 5 | 5 | 11 | 11 | 19 | 19 | 29 | 29
| | | | 1 | 1 | 7 | 7 | 19 | 19 | 39 | 39 | 69
| | | | | 1 | 1 | 9 | 9 | 29 | 29 | 69 | 69
| | | | | | 1 | 1 | 11 | 11 | 41 | 41 | 111
| | | | | | | 1 | 1 | 13 | 13 | 55 | 55
| | | | | | | | 1 | 1 | 15 | 15 | 71
| | | | | | | | | 1 | 1 | 17 | 17
| | | | | | | | | | 1 | 1 | 19
| | | | | | | | | | | 1 | 1
| | | | | | | | | | | | 1
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