A215297 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | 1 | | 3 | | 3 | | 1 |
| | | | | | | | 1 | | 6 | | 6 | | 6 | | 1 |
| | | | | | | 1 | | 10 | | 30 | | 30 | | 10 | | 1 |
| | | | | | 1 | | 20 | | 70 | | 280 | | 70 | | 20 | | 1 |
| | | | | 1 | | 35 | | 420 | | 2100 | | 2100 | | 420 | | 35 | | 1 |
| | | | 1 | | 70 | | 1050 | | 23100 | | 23100 | | 23100 | | 1050 | | 70 | | 1 |
| | | 1 | | 126 | | 6930 | | 210210 | | 1051050 | | 1051050 | | 210210 | | 6930 | | 126 | | 1 |
| | 1 | | 252 | | 18018 | | 2522520 | | 14294280 |
|
A215297 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 6 | 10 | 20 | 35 | 70 | 126 | 252
| | 1 | 3 | 6 | 30 | 70 | 420 | 1050 | 6930 | 18018
| | 1 | 6 | 30 | 280 | 2100 | 23100 | 210210 | 2522520
| | 1 | 10 | 70 | 2100 | 23100 | 1051050 | 14294280
| | 1 | 20 | 420 | 23100 | 1051050
| | 1 | 35 | 1050 | 210210
| | 1 | 70 | 6930
| | 1 | 126
| | 1
|
A215297 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 6 | 10 | 20 | 35 | 70 | 126 | 252
| | | 1 | 3 | 6 | 30 | 70 | 420 | 1050 | 6930 | 18018
| | | | 1 | 6 | 30 | 280 | 2100 | 23100 | 210210 | 2522520
| | | | | 1 | 10 | 70 | 2100 | 23100 | 1051050 | 14294280
| | | | | | 1 | 20 | 420 | 23100 | 1051050
| | | | | | | 1 | 35 | 1050 | 210210
| | | | | | | | 1 | 70 | 6930
| | | | | | | | | 1 | 126
| | | | | | | | | | 1
| | | | | | | | | |
|
|
