A180424 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 0 |
| | | | | | | | | | | 1 | | 1 | | 0 |
| | | | | | | | | | 1 | | 1 | | 1 | | 0 |
| | | | | | | | | 1 | | 2 | | 2 | | 1 | | 0 |
| | | | | | | | 1 | | 2 | | 1 | | 2 | | 1 | | 0 |
| | | | | | | 1 | | 3 | | 3 | | 3 | | 3 | | 1 | | 0 |
| | | | | | 1 | | 3 | | 3 | | 4 | | 3 | | 3 | | 1 | | 0 |
| | | | | 1 | | 4 | | 3 | | 6 | | 6 | | 3 | | 4 | | 1 | | 0 |
| | | | 1 | | 4 | | 4 | | 8 | | 5 | | 8 | | 4 | | 4 | | 1 | | 0 |
| | | 1 | | 5 | | 5 | | 10 | | 10 | | 10 | | 10 | | 5 | | 5 | | 1 | | 0 |
| | 1 | | 5 | | 4 | | 12 | | 10 | | 17 | | 10 | | 12 | | 4 | | 5 | | 1 | | 0 |
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A180424 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 0 | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5
| 0 | 1 | 2 | 1 | 3 | 3 | 3 | 4 | 5 | 4
| 0 | 1 | 2 | 3 | 4 | 6 | 8 | 10 | 12
| 0 | 1 | 3 | 3 | 6 | 5 | 10 | 10
| 0 | 1 | 3 | 3 | 8 | 10 | 17
| 0 | 1 | 4 | 4 | 10 | 10
| 0 | 1 | 4 | 5 | 12
| 0 | 1 | 5 | 4
| 0 | 1 | 5
| 0 | 1
| 0
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A180424 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 0 | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5
| | | 0 | 1 | 2 | 1 | 3 | 3 | 3 | 4 | 5 | 4
| | | | 0 | 1 | 2 | 3 | 4 | 6 | 8 | 10 | 12
| | | | | 0 | 1 | 3 | 3 | 6 | 5 | 10 | 10
| | | | | | 0 | 1 | 3 | 3 | 8 | 10 | 17
| | | | | | | 0 | 1 | 4 | 4 | 10 | 10
| | | | | | | | 0 | 1 | 4 | 5 | 12
| | | | | | | | | 0 | 1 | 5 | 4
| | | | | | | | | | 0 | 1 | 5
| | | | | | | | | | | 0 | 1
| | | | | | | | | | | | 0
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