A155493 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 15 | | 1 |
| | | | | | | 1 | | 118 | | 118 | | 1 |
| | | | | | 1 | | 770 | | 3540 | | 770 | | 1 |
| | | | | 1 | | 4671 | | 67810 | | 67810 | | 4671 | | 1 |
| | | | 1 | | 27321 | | 1039689 | | 3085355 | | 1039689 | | 27321 | | 1 |
| | | 1 | | 156220 | | 14006244 | | 99524810 | | 99524810 | | 14006244 | | 156220 | | 1 |
| | 1 | | 878868 | | 173788752 | | 2602528824 | | 6090918372 | | 2602528824 | | 173788752 | | 878868 | | 1 |
|
A155493 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 15 | 118 | 770 | 4671 | 27321 | 156220 | 878868
| | 1 | 118 | 3540 | 67810 | 1039689 | 14006244 | 173788752
| | 1 | 770 | 67810 | 3085355 | 99524810 | 2602528824
| | 1 | 4671 | 1039689 | 99524810 | 6090918372
| | 1 | 27321 | 14006244 | 2602528824
| | 1 | 156220 | 173788752
| | 1 | 878868
| | 1
|
A155493 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 15 | 118 | 770 | 4671 | 27321 | 156220 | 878868
| | | 1 | 118 | 3540 | 67810 | 1039689 | 14006244 | 173788752
| | | | 1 | 770 | 67810 | 3085355 | 99524810 | 2602528824
| | | | | 1 | 4671 | 1039689 | 99524810 | 6090918372
| | | | | | 1 | 27321 | 14006244 | 2602528824
| | | | | | | 1 | 156220 | 173788752
| | | | | | | | 1 | 878868
| | | | | | | | | 1
|
|
