A078401 as a triangular array
| | | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | | | 1 | | 2 | | 2 |
| | | | | | | | | | | | 1 | | 1 | | 2 | | 2 |
| | | | | | | | | | | 1 | | 2 | | 3 | | 4 | | 4 |
| | | | | | | | | | 1 | | 1 | | 1 | | 1 | | 2 | | 2 |
| | | | | | | | | 1 | | 2 | | 3 | | 4 | | 5 | | 6 | | 6 |
| | | | | | | | 1 | | 1 | | 2 | | 2 | | 3 | | 3 | | 4 | | 4 |
| | | | | | | 1 | | 2 | | 2 | | 3 | | 4 | | 4 | | 5 | | 6 | | 6 |
| | | | | | 1 | | 1 | | 2 | | 2 | | 2 | | 2 | | 3 | | 3 | | 4 | | 4 |
| | | | | 1 | | 2 | | 3 | | 4 | | 5 | | 6 | | 7 | | 8 | | 9 | | 10 | | 10 |
| | | | 1 | | 1 | | 1 | | 1 | | 2 | | 2 | | 3 | | 3 | | 3 | | 3 | | 4 | | 4 |
| | | 1 | | 2 | | 3 | | 4 | | 5 | | 6 | | 7 | | 8 | | 9 | | 10 | | 11 | | 12 | | 12 |
| | 1 | | 1 | | 2 | | 2 | | 3 | | 3 | | 3 | | 3 | | 4 | | 4 | | 5 |
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A078401 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 1
| 2 | 2 | 3 | 1 | 3 | 2 | 2 | 2 | 3 | 1 | 3 | 2
| 2 | 4 | 1 | 4 | 2 | 3 | 2 | 4 | 1 | 4 | 2
| 4 | 2 | 5 | 3 | 4 | 2 | 5 | 2 | 5 | 3
| 2 | 6 | 3 | 4 | 2 | 6 | 2 | 6 | 3
| 6 | 4 | 5 | 3 | 7 | 3 | 7 | 3
| 4 | 6 | 3 | 8 | 3 | 8 | 3
| 6 | 4 | 9 | 3 | 9 | 4
| 4 | 10 | 3 | 10 | 4
| 10 | 4 | 11 | 5
| 4 | 12
| 12
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A078401 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 1
| | | 2 | 2 | 3 | 1 | 3 | 2 | 2 | 2 | 3 | 1 | 3 | 2
| | | | 2 | 4 | 1 | 4 | 2 | 3 | 2 | 4 | 1 | 4 | 2
| | | | | 4 | 2 | 5 | 3 | 4 | 2 | 5 | 2 | 5 | 3
| | | | | | 2 | 6 | 3 | 4 | 2 | 6 | 2 | 6 | 3
| | | | | | | 6 | 4 | 5 | 3 | 7 | 3 | 7 | 3
| | | | | | | | 4 | 6 | 3 | 8 | 3 | 8 | 3
| | | | | | | | | 6 | 4 | 9 | 3 | 9 | 4
| | | | | | | | | | 4 | 10 | 3 | 10 | 4
| | | | | | | | | | | 10 | 4 | 11 | 5
| | | | | | | | | | | | 4 | 12
| | | | | | | | | | | | | 12
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