A193973 as a triangular array
| | | | | | | | | | | | 2 |
| | | | | | | | | | | | 3 | | 5 |
| | | | | | | | | | | 4 | | 7 | | 9 |
| | | | | | | | | | 5 | | 9 | | 12 | | 14 |
| | | | | | | | | 6 | | 11 | | 15 | | 18 | | 20 |
| | | | | | | | 7 | | 13 | | 18 | | 22 | | 25 | | 27 |
| | | | | | | 8 | | 15 | | 21 | | 26 | | 30 | | 33 | | 35 |
| | | | | | 9 | | 17 | | 24 | | 30 | | 35 | | 39 | | 42 | | 44 |
| | | | | 10 | | 19 | | 27 | | 34 | | 40 | | 45 | | 49 | | 52 | | 54 |
| | | | 11 | | 21 | | 30 | | 38 | | 45 | | 51 | | 56 | | 60 | | 63 | | 65 |
| | | 12 | | 23 | | 33 | | 42 | | 50 | | 57 | | 63 | | 68 | | 72 | | 75 | | 77 |
| | 13 | | 25 | | 36 | | 46 |
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A193973 as a square array
2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13
| 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19 | 21 | 23 | 25
| 9 | 12 | 15 | 18 | 21 | 24 | 27 | 30 | 33 | 36
| 14 | 18 | 22 | 26 | 30 | 34 | 38 | 42 | 46
| 20 | 25 | 30 | 35 | 40 | 45 | 50
| 27 | 33 | 39 | 45 | 51 | 57
| 35 | 42 | 49 | 56 | 63
| 44 | 52 | 60 | 68
| 54 | 63 | 72
| 65 | 75
| 77
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A193973 as an upper right triangle
2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13
| | 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19 | 21 | 23 | 25
| | | 9 | 12 | 15 | 18 | 21 | 24 | 27 | 30 | 33 | 36
| | | | 14 | 18 | 22 | 26 | 30 | 34 | 38 | 42 | 46
| | | | | 20 | 25 | 30 | 35 | 40 | 45 | 50
| | | | | | 27 | 33 | 39 | 45 | 51 | 57
| | | | | | | 35 | 42 | 49 | 56 | 63
| | | | | | | | 44 | 52 | 60 | 68
| | | | | | | | | 54 | 63 | 72
| | | | | | | | | | 65 | 75
| | | | | | | | | | | 77
| | | | | | | | | | |
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