A273897 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 2 | | 2 | | 1 |
| | | | | | | | | 4 | | 5 | | 3 | | 1 |
| | | | | | | | 9 | | 12 | | 9 | | 4 | | 1 |
| | | | | | | 22 | | 30 | | 25 | | 14 | | 5 | | 1 |
| | | | | | 57 | | 78 | | 69 | | 44 | | 20 | | 6 | | 1 |
| | | | | 154 | | 210 | | 192 | | 133 | | 70 | | 27 | | 7 | | 1 |
| | | | 429 | | 582 | | 542 | | 396 | | 230 | | 104 | | 35 | | 8 | | 1 |
| | | 1223 | | 1651 | | 1554 | | 1176 | | 731 | | 369 | | 147 | | 44 | | 9 | | 1 |
| | 3550 | | 4772 | | 4521 | | 3504 | | 2285 | | 1248 | | 560 | | 200 | | 54 | | 10 | | 1 |
|
A273897 as a square array
| 1 | 1 | 2 | 4 | 9 | 22 | 57 | 154 | 429 | 1223 | 3550
| | 1 | 2 | 5 | 12 | 30 | 78 | 210 | 582 | 1651 | 4772
| | 1 | 3 | 9 | 25 | 69 | 192 | 542 | 1554 | 4521
| | 1 | 4 | 14 | 44 | 133 | 396 | 1176 | 3504
| | 1 | 5 | 20 | 70 | 230 | 731 | 2285
| | 1 | 6 | 27 | 104 | 369 | 1248
| | 1 | 7 | 35 | 147 | 560
| | 1 | 8 | 44 | 200
| | 1 | 9 | 54
| | 1 | 10
| | 1
|
A273897 as an upper right triangle
| 1 | 1 | 2 | 4 | 9 | 22 | 57 | 154 | 429 | 1223 | 3550
| | 1 | 2 | 5 | 12 | 30 | 78 | 210 | 582 | 1651 | 4772
| | | 1 | 3 | 9 | 25 | 69 | 192 | 542 | 1554 | 4521
| | | | 1 | 4 | 14 | 44 | 133 | 396 | 1176 | 3504
| | | | | 1 | 5 | 20 | 70 | 230 | 731 | 2285
| | | | | | 1 | 6 | 27 | 104 | 369 | 1248
| | | | | | | 1 | 7 | 35 | 147 | 560
| | | | | | | | 1 | 8 | 44 | 200
| | | | | | | | | 1 | 9 | 54
| | | | | | | | | | 1 | 10
| | | | | | | | | | | 1
|
|
