A051159 as a triangular array
| | | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | | | 1 | | 0 | | 1 |
| | | | | | | | | | | | 1 | | 1 | | 1 | | 1 |
| | | | | | | | | | | 1 | | 0 | | 2 | | 0 | | 1 |
| | | | | | | | | | 1 | | 1 | | 2 | | 2 | | 1 | | 1 |
| | | | | | | | | 1 | | 0 | | 3 | | 0 | | 3 | | 0 | | 1 |
| | | | | | | | 1 | | 1 | | 3 | | 3 | | 3 | | 3 | | 1 | | 1 |
| | | | | | | 1 | | 0 | | 4 | | 0 | | 6 | | 0 | | 4 | | 0 | | 1 |
| | | | | | 1 | | 1 | | 4 | | 4 | | 6 | | 6 | | 4 | | 4 | | 1 | | 1 |
| | | | | 1 | | 0 | | 5 | | 0 | | 10 | | 0 | | 10 | | 0 | | 5 | | 0 | | 1 |
| | | | 1 | | 1 | | 5 | | 5 | | 10 | | 10 | | 10 | | 10 | | 5 | | 5 | | 1 | | 1 |
| | | 1 | | 0 | | 6 | | 0 | | 15 | | 0 | | 20 | | 0 | | 15 | | 0 | | 6 | | 0 | | 1 |
| | 1 | | 1 | | 6 | | 6 | | 15 | | 15 | | 20 | | 20 | | 15 | | 15 | | 6 | | 6 | | 1 | | 1 |
|
A051159 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1
| | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6
| | 1 | 0 | 2 | 0 | 3 | 0 | 4 | 0 | 5 | 0 | 6
| | 1 | 1 | 3 | 3 | 6 | 6 | 10 | 10 | 15 | 15
| | 1 | 0 | 3 | 0 | 6 | 0 | 10 | 0 | 15
| | 1 | 1 | 4 | 4 | 10 | 10 | 20 | 20
| | 1 | 0 | 4 | 0 | 10 | 0 | 20
| | 1 | 1 | 5 | 5 | 15 | 15
| | 1 | 0 | 5 | 0 | 15
| | 1 | 1 | 6 | 6
| | 1 | 0 | 6
| | 1 | 1
| | 1
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A051159 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1
| | | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6
| | | | 1 | 0 | 2 | 0 | 3 | 0 | 4 | 0 | 5 | 0 | 6
| | | | | 1 | 1 | 3 | 3 | 6 | 6 | 10 | 10 | 15 | 15
| | | | | | 1 | 0 | 3 | 0 | 6 | 0 | 10 | 0 | 15
| | | | | | | 1 | 1 | 4 | 4 | 10 | 10 | 20 | 20
| | | | | | | | 1 | 0 | 4 | 0 | 10 | 0 | 20
| | | | | | | | | 1 | 1 | 5 | 5 | 15 | 15
| | | | | | | | | | 1 | 0 | 5 | 0 | 15
| | | | | | | | | | | 1 | 1 | 6 | 6
| | | | | | | | | | | | 1 | 0 | 6
| | | | | | | | | | | | | 1 | 1
| | | | | | | | | | | | | | 1
|
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