A177993 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 2 | | 3 | | 1 |
| | | | | | | | | | 2 | | 4 | | 3 | | 1 |
| | | | | | | | | 3 | | 8 | | 9 | | 5 | | 1 |
| | | | | | | | 3 | | 9 | | 13 | | 11 | | 5 | | 1 |
| | | | | | | 4 | | 15 | | 28 | | 31 | | 20 | | 7 | | 1 |
| | | | | | 4 | | 16 | | 34 | | 46 | | 40 | | 22 | | 7 | | 1 |
| | | | | 5 | | 24 | | 62 | | 102 | | 110 | | 78 | | 35 | | 9 | | 1 |
| | | | 5 | | 25 | | 70 | | 130 | | 166 | | 148 | | 91 | | 37 | | 9 | | 1 |
| | | 6 | | 35 | | 115 | | 250 | | 376 | | 400 | | 301 | | 157 | | 54 | | 11 | | 1 |
| | 6 | | 36 | | 125 | | 295 | | 496 | | 610 | | 553 | | 367 | | 174 | | 56 | | 11 | | 1 |
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A177993 as a square array
1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6
| 1 | 3 | 4 | 8 | 9 | 15 | 16 | 24 | 25 | 35 | 36
| 1 | 3 | 9 | 13 | 28 | 34 | 62 | 70 | 115 | 125
| 1 | 5 | 11 | 31 | 46 | 102 | 130 | 250 | 295
| 1 | 5 | 20 | 40 | 110 | 166 | 376 | 496
| 1 | 7 | 22 | 78 | 148 | 400 | 610
| 1 | 7 | 35 | 91 | 301 | 553
| 1 | 9 | 37 | 157 | 367
| 1 | 9 | 54 | 174
| 1 | 11 | 56
| 1 | 11
| 1
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A177993 as an upper right triangle
1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6
| | 1 | 3 | 4 | 8 | 9 | 15 | 16 | 24 | 25 | 35 | 36
| | | 1 | 3 | 9 | 13 | 28 | 34 | 62 | 70 | 115 | 125
| | | | 1 | 5 | 11 | 31 | 46 | 102 | 130 | 250 | 295
| | | | | 1 | 5 | 20 | 40 | 110 | 166 | 376 | 496
| | | | | | 1 | 7 | 22 | 78 | 148 | 400 | 610
| | | | | | | 1 | 7 | 35 | 91 | 301 | 553
| | | | | | | | 1 | 9 | 37 | 157 | 367
| | | | | | | | | 1 | 9 | 54 | 174
| | | | | | | | | | 1 | 11 | 56
| | | | | | | | | | | 1 | 11
| | | | | | | | | | | | 1
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