A205545 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 1 | | 1 |
| | | | | | | | | 1 | | 20 | | 20 | | 1 |
| | | | | | | | 1 | | 84 | | 1 | | 84 | | 1 |
| | | | | | | 1 | | 220 | | 84 | | 84 | | 220 | | 1 |
| | | | | | 1 | | 455 | | 924 | | 1 | | 924 | | 455 | | 1 |
| | | | | 1 | | 816 | | 5005 | | 220 | | 220 | | 5005 | | 816 | | 1 |
| | | | 1 | | 1330 | | 18564 | | 5005 | | 1 | | 5005 | | 18564 | | 1330 | | 1 |
| | | 1 | | 2024 | | 54264 | | 48620 | | 455 | | 455 | | 48620 | | 54264 | | 2024 | | 1 |
| | 1 | | 2925 |
|
A205545 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 1 | 20 | 84 | 220 | 455 | 816 | 1330 | 2024 | 2925
| 1 | 20 | 1 | 84 | 924 | 5005 | 18564 | 54264
| 1 | 84 | 84 | 1 | 220 | 5005 | 48620
| 1 | 220 | 924 | 220 | 1 | 455
| 1 | 455 | 5005 | 5005 | 455
| 1 | 816 | 18564 | 48620
| 1 | 1330 | 54264
| 1 | 2024
| 1
|
A205545 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 20 | 84 | 220 | 455 | 816 | 1330 | 2024 | 2925
| | | 1 | 20 | 1 | 84 | 924 | 5005 | 18564 | 54264
| | | | 1 | 84 | 84 | 1 | 220 | 5005 | 48620
| | | | | 1 | 220 | 924 | 220 | 1 | 455
| | | | | | 1 | 455 | 5005 | 5005 | 455
| | | | | | | 1 | 816 | 18564 | 48620
| | | | | | | | 1 | 1330 | 54264
| | | | | | | | | 1 | 2024
| | | | | | | | | | 1
| | | | | | | | | |
|
|