A026374 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 3 | | 1 |
| | | | | | | | | 1 | | 4 | | 4 | | 1 |
| | | | | | | | 1 | | 6 | | 11 | | 6 | | 1 |
| | | | | | | 1 | | 7 | | 17 | | 17 | | 7 | | 1 |
| | | | | | 1 | | 9 | | 30 | | 45 | | 30 | | 9 | | 1 |
| | | | | 1 | | 10 | | 39 | | 75 | | 75 | | 39 | | 10 | | 1 |
| | | | 1 | | 12 | | 58 | | 144 | | 195 | | 144 | | 58 | | 12 | | 1 |
| | | 1 | | 13 | | 70 | | 202 | | 339 | | 339 | | 202 | | 70 | | 13 | | 1 |
| | 1 | | 15 | | 95 | | 330 | | 685 | | 873 | | 685 | | 330 | | 95 | | 15 | | 1 |
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A026374 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 3 | 4 | 6 | 7 | 9 | 10 | 12 | 13 | 15
| 1 | 4 | 11 | 17 | 30 | 39 | 58 | 70 | 95
| 1 | 6 | 17 | 45 | 75 | 144 | 202 | 330
| 1 | 7 | 30 | 75 | 195 | 339 | 685
| 1 | 9 | 39 | 144 | 339 | 873
| 1 | 10 | 58 | 202 | 685
| 1 | 12 | 70 | 330
| 1 | 13 | 95
| 1 | 15
| 1
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A026374 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 4 | 6 | 7 | 9 | 10 | 12 | 13 | 15
| | | 1 | 4 | 11 | 17 | 30 | 39 | 58 | 70 | 95
| | | | 1 | 6 | 17 | 45 | 75 | 144 | 202 | 330
| | | | | 1 | 7 | 30 | 75 | 195 | 339 | 685
| | | | | | 1 | 9 | 39 | 144 | 339 | 873
| | | | | | | 1 | 10 | 58 | 202 | 685
| | | | | | | | 1 | 12 | 70 | 330
| | | | | | | | | 1 | 13 | 95
| | | | | | | | | | 1 | 15
| | | | | | | | | | | 1
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