A072732 as a triangular array
| | | | | | | | | | | | 0 |
| | | | | | | | | | | | 1 | | 4 |
| | | | | | | | | | | 7 | | 12 | | 2 |
| | | | | | | | | | 3 | | 17 | | 24 | | 8 |
| | | | | | | | | 11 | | 31 | | 40 | | 18 | | 5 |
| | | | | | | | 6 | | 23 | | 49 | | 60 | | 32 | | 13 |
| | | | | | | 16 | | 39 | | 71 | | 84 | | 50 | | 25 | | 9 |
| | | | | | 10 | | 30 | | 59 | | 97 | | 112 | | 72 | | 41 | | 19 |
| | | | | 22 | | 48 | | 83 | | 127 | | 144 | | 98 | | 61 | | 33 | | 14 |
| | | | 15 | | 38 | | 70 | | 111 | | 161 | | 180 | | 128 | | 85 | | 51 | | 26 |
| | | 29 | | 58 | | 96 | | 143 | | 199 | | 220 | | 162 | | 113 | | 73 | | 42 | | 20 |
| | 21 | | 47 |
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A072732 as a square array
0 | 1 | 7 | 3 | 11 | 6 | 16 | 10 | 22 | 15 | 29 | 21
| 4 | 12 | 17 | 31 | 23 | 39 | 30 | 48 | 38 | 58 | 47
| 2 | 24 | 40 | 49 | 71 | 59 | 83 | 70 | 96
| 8 | 18 | 60 | 84 | 97 | 127 | 111 | 143
| 5 | 32 | 50 | 112 | 144 | 161 | 199
| 13 | 25 | 72 | 98 | 180 | 220
| 9 | 41 | 61 | 128 | 162
| 19 | 33 | 85 | 113
| 14 | 51 | 73
| 26 | 42
| 20
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A072732 as an upper right triangle
0 | 1 | 7 | 3 | 11 | 6 | 16 | 10 | 22 | 15 | 29 | 21
| | 4 | 12 | 17 | 31 | 23 | 39 | 30 | 48 | 38 | 58 | 47
| | | 2 | 24 | 40 | 49 | 71 | 59 | 83 | 70 | 96
| | | | 8 | 18 | 60 | 84 | 97 | 127 | 111 | 143
| | | | | 5 | 32 | 50 | 112 | 144 | 161 | 199
| | | | | | 13 | 25 | 72 | 98 | 180 | 220
| | | | | | | 9 | 41 | 61 | 128 | 162
| | | | | | | | 19 | 33 | 85 | 113
| | | | | | | | | 14 | 51 | 73
| | | | | | | | | | 26 | 42
| | | | | | | | | | | 20
| | | | | | | | | | |
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