A026725 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | | 1 | | 4 | | 3 | | 1 |
| | | | | | | | | 1 | | 5 | | 7 | | 4 | | 1 |
| | | | | | | | 1 | | 6 | | 16 | | 11 | | 5 | | 1 |
| | | | | | | 1 | | 7 | | 22 | | 27 | | 16 | | 6 | | 1 |
| | | | | | 1 | | 8 | | 29 | | 65 | | 43 | | 22 | | 7 | | 1 |
| | | | | 1 | | 9 | | 37 | | 94 | | 108 | | 65 | | 29 | | 8 | | 1 |
| | | | 1 | | 10 | | 46 | | 131 | | 267 | | 173 | | 94 | | 37 | | 9 | | 1 |
| | | 1 | | 11 | | 56 | | 177 | | 398 | | 440 | | 267 | | 131 | | 46 | | 10 | | 1 |
| | 1 | | 12 | | 67 | | 233 |
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A026725 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 2 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12
| 1 | 3 | 7 | 16 | 22 | 29 | 37 | 46 | 56 | 67
| 1 | 4 | 11 | 27 | 65 | 94 | 131 | 177 | 233
| 1 | 5 | 16 | 43 | 108 | 267 | 398
| 1 | 6 | 22 | 65 | 173 | 440
| 1 | 7 | 29 | 94 | 267
| 1 | 8 | 37 | 131
| 1 | 9 | 46
| 1 | 10
| 1
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A026725 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12
| | | 1 | 3 | 7 | 16 | 22 | 29 | 37 | 46 | 56 | 67
| | | | 1 | 4 | 11 | 27 | 65 | 94 | 131 | 177 | 233
| | | | | 1 | 5 | 16 | 43 | 108 | 267 | 398
| | | | | | 1 | 6 | 22 | 65 | 173 | 440
| | | | | | | 1 | 7 | 29 | 94 | 267
| | | | | | | | 1 | 8 | 37 | 131
| | | | | | | | | 1 | 9 | 46
| | | | | | | | | | 1 | 10
| | | | | | | | | | | 1
| | | | | | | | | | |
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