A178346 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 5 | | 1 |
| | | | | | | | 1 | | 18 | | 18 | | 1 |
| | | | | | | 1 | | 52 | | 144 | | 52 | | 1 |
| | | | | | 1 | | 131 | | 766 | | 766 | | 131 | | 1 |
| | | | | 1 | | 303 | | 3273 | | 6743 | | 3273 | | 303 | | 1 |
| | | | 1 | | 664 | | 12312 | | 45422 | | 45422 | | 12312 | | 664 | | 1 |
| | | 1 | | 1406 | | 42844 | | 261230 | | 463348 | | 261230 | | 42844 | | 1406 | | 1 |
| | 1 | | 2913 | | 141936 | | 1358100 | | 3915312 |
|
A178346 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 5 | 18 | 52 | 131 | 303 | 664 | 1406 | 2913
| | 1 | 18 | 144 | 766 | 3273 | 12312 | 42844 | 141936
| | 1 | 52 | 766 | 6743 | 45422 | 261230 | 1358100
| | 1 | 131 | 3273 | 45422 | 463348 | 3915312
| | 1 | 303 | 12312 | 261230
| | 1 | 664 | 42844
| | 1 | 1406
| | 1
|
A178346 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 5 | 18 | 52 | 131 | 303 | 664 | 1406 | 2913
| | | 1 | 18 | 144 | 766 | 3273 | 12312 | 42844 | 141936
| | | | 1 | 52 | 766 | 6743 | 45422 | 261230 | 1358100
| | | | | 1 | 131 | 3273 | 45422 | 463348 | 3915312
| | | | | | 1 | 303 | 12312 | 261230
| | | | | | | 1 | 664 | 42844
| | | | | | | | 1 | 1406
| | | | | | | | | 1
| | | | | | | | |
|
|
