A026758 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | | 1 | | 4 | | 3 | | 1 |
| | | | | | | | | 1 | | 5 | | 7 | | 4 | | 1 |
| | | | | | | | 1 | | 7 | | 16 | | 11 | | 5 | | 1 |
| | | | | | | 1 | | 8 | | 23 | | 27 | | 16 | | 6 | | 1 |
| | | | | | 1 | | 10 | | 38 | | 66 | | 43 | | 22 | | 7 | | 1 |
| | | | | 1 | | 11 | | 48 | | 104 | | 109 | | 65 | | 29 | | 8 | | 1 |
| | | | 1 | | 13 | | 69 | | 190 | | 279 | | 174 | | 94 | | 37 | | 9 | | 1 |
| | | 1 | | 14 | | 82 | | 259 | | 469 | | 453 | | 268 | | 131 | | 46 | | 10 | | 1 |
| | 1 | | 16 | | 109 | | 410 | | 918 | | 1201 | | 721 | | 399 | | 177 | | 56 | | 11 | | 1 |
|
A026758 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 4 | 5 | 7 | 8 | 10 | 11 | 13 | 14 | 16
| | 1 | 3 | 7 | 16 | 23 | 38 | 48 | 69 | 82 | 109
| | 1 | 4 | 11 | 27 | 66 | 104 | 190 | 259 | 410
| | 1 | 5 | 16 | 43 | 109 | 279 | 469 | 918
| | 1 | 6 | 22 | 65 | 174 | 453 | 1201
| | 1 | 7 | 29 | 94 | 268 | 721
| | 1 | 8 | 37 | 131 | 399
| | 1 | 9 | 46 | 177
| | 1 | 10 | 56
| | 1 | 11
| | 1
|
A026758 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 4 | 5 | 7 | 8 | 10 | 11 | 13 | 14 | 16
| | | 1 | 3 | 7 | 16 | 23 | 38 | 48 | 69 | 82 | 109
| | | | 1 | 4 | 11 | 27 | 66 | 104 | 190 | 259 | 410
| | | | | 1 | 5 | 16 | 43 | 109 | 279 | 469 | 918
| | | | | | 1 | 6 | 22 | 65 | 174 | 453 | 1201
| | | | | | | 1 | 7 | 29 | 94 | 268 | 721
| | | | | | | | 1 | 8 | 37 | 131 | 399
| | | | | | | | | 1 | 9 | 46 | 177
| | | | | | | | | | 1 | 10 | 56
| | | | | | | | | | | 1 | 11
| | | | | | | | | | | | 1
|
|
