A072766 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 2 | | 3 |
| | | | | | | | | | 4 | | 6 | | 7 |
| | | | | | | | | 5 | | 14 | | 16 | | 8 |
| | | | | | | | 9 | | 15 | | 42 | | 19 | | 17 |
| | | | | | | 10 | | 37 | | 43 | | 51 | | 44 | | 18 |
| | | | | | 11 | | 38 | | 121 | | 52 | | 126 | | 47 | | 20 |
| | | | | 12 | | 39 | | 122 | | 149 | | 127 | | 135 | | 53 | | 21 |
| | | | 13 | | 40 | | 123 | | 150 | | 385 | | 136 | | 154 | | 56 | | 22 |
| | | 23 | | 41 | | 124 | | 151 | | 386 | | 413 | | 155 | | 163 | | 60 | | 45 |
| | 24 | | 107 | | 125 | | 152 | | 387 | | 414 | | 475 | | 164 |
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A072766 as a square array
1 | 2 | 4 | 5 | 9 | 10 | 11 | 12 | 13 | 23 | 24
| 3 | 6 | 14 | 15 | 37 | 38 | 39 | 40 | 41 | 107
| 7 | 16 | 42 | 43 | 121 | 122 | 123 | 124 | 125
| 8 | 19 | 51 | 52 | 149 | 150 | 151 | 152
| 17 | 44 | 126 | 127 | 385 | 386 | 387
| 18 | 47 | 135 | 136 | 413 | 414
| 20 | 53 | 154 | 155 | 475
| 21 | 56 | 163 | 164
| 22 | 60
| 45
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A072766 as an upper right triangle
1 | 2 | 4 | 5 | 9 | 10 | 11 | 12 | 13 | 23 | 24
| | 3 | 6 | 14 | 15 | 37 | 38 | 39 | 40 | 41 | 107
| | | 7 | 16 | 42 | 43 | 121 | 122 | 123 | 124 | 125
| | | | 8 | 19 | 51 | 52 | 149 | 150 | 151 | 152
| | | | | 17 | 44 | 126 | 127 | 385 | 386 | 387
| | | | | | 18 | 47 | 135 | 136 | 413 | 414
| | | | | | | 20 | 53 | 154 | 155 | 475
| | | | | | | | 21 | 56 | 163 | 164
| | | | | | | | | 22 | 60
| | | | | | | | | | 45
| | | | | | | | | |
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