A026637 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | | 1 | | 4 | | 4 | | 1 |
| | | | | | | | | 1 | | 5 | | 8 | | 5 | | 1 |
| | | | | | | | 1 | | 7 | | 13 | | 13 | | 7 | | 1 |
| | | | | | | 1 | | 8 | | 20 | | 26 | | 20 | | 8 | | 1 |
| | | | | | 1 | | 10 | | 28 | | 46 | | 46 | | 28 | | 10 | | 1 |
| | | | | 1 | | 11 | | 38 | | 74 | | 92 | | 74 | | 38 | | 11 | | 1 |
| | | | 1 | | 13 | | 49 | | 112 | | 166 | | 166 | | 112 | | 49 | | 13 | | 1 |
| | | 1 | | 14 | | 62 | | 161 | | 278 | | 332 | | 278 | | 161 | | 62 | | 14 | | 1 |
| | 1 | | 16 | | 76 |
|
A026637 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 | 4 | 8 | 13 | 20 | 28 | 38 | 49 | 62 | 76
| | 1 | 5 | 13 | 26 | 46 | 74 | 112 | 161
| | 1 | 7 | 20 | 46 | 92 | 166 | 278
| | 1 | 8 | 28 | 74 | 166 | 332
| | 1 | 10 | 38 | 112 | 278
| | 1 | 11 | 49 | 161
| | 1 | 13 | 62
| | 1 | 14
| | 1
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A026637 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 | 4 | 8 | 13 | 20 | 28 | 38 | 49 | 62 | 76
| | | | 1 | 5 | 13 | 26 | 46 | 74 | 112 | 161
| | | | | 1 | 7 | 20 | 46 | 92 | 166 | 278
| | | | | | 1 | 8 | 28 | 74 | 166 | 332
| | | | | | | 1 | 10 | 38 | 112 | 278
| | | | | | | | 1 | 11 | 49 | 161
| | | | | | | | | 1 | 13 | 62
| | | | | | | | | | 1 | 14
| | | | | | | | | | | 1
| | | | | | | | | | |
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