A156186 as a triangular array
| | | | | | | | | | 2 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 6 | | 1 |
| | | | | | | | 1 | | 30 | | 30 | | 1 |
| | | | | | | 1 | | 159 | | 360 | | 159 | | 1 |
| | | | | | 1 | | 1119 | | 3639 | | 3639 | | 1119 | | 1 |
| | | | | 1 | | 10932 | | 41262 | | 57414 | | 41262 | | 10932 | | 1 |
| | | | 1 | | 136764 | | 582642 | | 898632 | | 898632 | | 582642 | | 136764 | | 1 |
| | | 1 | | 2031933 | | 9957168 | | 16634718 | | 17182152 | | 16634718 | | 9957168 | | 2031933 | | 1 |
| | 1 |
|
A156186 as a square array
| 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 6 | 30 | 159 | 1119 | 10932 | 136764 | 2031933
| | 1 | 30 | 360 | 3639 | 41262 | 582642 | 9957168
| | 1 | 159 | 3639 | 57414 | 898632 | 16634718
| | 1 | 1119 | 41262 | 898632 | 17182152
| | 1 | 10932 | 582642 | 16634718
| | 1 | 136764 | 9957168
| | 1 | 2031933
| | 1
|
A156186 as an upper right triangle
| 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 6 | 30 | 159 | 1119 | 10932 | 136764 | 2031933
| | | 1 | 30 | 360 | 3639 | 41262 | 582642 | 9957168
| | | | 1 | 159 | 3639 | 57414 | 898632 | 16634718
| | | | | 1 | 1119 | 41262 | 898632 | 17182152
| | | | | | 1 | 10932 | 582642 | 16634718
| | | | | | | 1 | 136764 | 9957168
| | | | | | | | 1 | 2031933
| | | | | | | | | 1
| | | | | | | | |
|
|
