A273350 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 3 | | 1 |
| | | | | | | | | 1 | | 6 | | 5 | | 1 |
| | | | | | | | 1 | | 10 | | 16 | | 7 | | 1 |
| | | | | | | 1 | | 15 | | 40 | | 31 | | 9 | | 1 |
| | | | | | 1 | | 21 | | 85 | | 105 | | 51 | | 11 | | 1 |
| | | | | 1 | | 28 | | 161 | | 295 | | 219 | | 76 | | 13 | | 1 |
| | | | 1 | | 36 | | 280 | | 721 | | 771 | | 396 | | 106 | | 15 | | 1 |
| | | 1 | | 45 | | 456 | | 1582 | | 2331 | | 1681 | | 650 | | 141 | | 17 | | 1 |
| | 1 | | 55 | | 705 | | 3186 | | 6244 | | 6083 | | 3235 | | 995 | | 181 | | 19 | | 1 |
|
A273350 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 6 | 10 | 15 | 21 | 28 | 36 | 45 | 55
| | 1 | 5 | 16 | 40 | 85 | 161 | 280 | 456 | 705
| | 1 | 7 | 31 | 105 | 295 | 721 | 1582 | 3186
| | 1 | 9 | 51 | 219 | 771 | 2331 | 6244
| | 1 | 11 | 76 | 396 | 1681 | 6083
| | 1 | 13 | 106 | 650 | 3235
| | 1 | 15 | 141 | 995
| | 1 | 17 | 181
| | 1 | 19
| | 1
|
A273350 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 6 | 10 | 15 | 21 | 28 | 36 | 45 | 55
| | | 1 | 5 | 16 | 40 | 85 | 161 | 280 | 456 | 705
| | | | 1 | 7 | 31 | 105 | 295 | 721 | 1582 | 3186
| | | | | 1 | 9 | 51 | 219 | 771 | 2331 | 6244
| | | | | | 1 | 11 | 76 | 396 | 1681 | 6083
| | | | | | | 1 | 13 | 106 | 650 | 3235
| | | | | | | | 1 | 15 | 141 | 995
| | | | | | | | | 1 | 17 | 181
| | | | | | | | | | 1 | 19
| | | | | | | | | | | 1
|
|
