A210574 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 3 | | 1 |
| | | | | | | 1 | | 7 | | 12 | | 1 |
| | | | | | 1 | | 15 | | 50 | | 264 | | 1 |
| | | | | 1 | | 31 | | 180 | | 1920 | | 11970 | | 1 |
| | | | 1 | | 63 | | 602 | | 11760 | | 146160 | | 1689600 | | 1 |
| | | 1 | | 127 | | 1932 | | 66024 | | 1477980 | | 34214400 | | 603233280 | | 1 |
| | 1 | | 255 | | 6050 | | 353304 | | 13556970 | | 568656000 | | 20043279360 | | 586244602944 | | 1 |
|
A210574 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 7 | 15 | 31 | 63 | 127 | 255
| | 1 | 12 | 50 | 180 | 602 | 1932 | 6050
| | 1 | 264 | 1920 | 11760 | 66024 | 353304
| | 1 | 11970 | 146160 | 1477980 | 13556970
| | 1 | 1689600 | 34214400 | 568656000
| | 1 | 603233280 | 20043279360
| | 1 | 586244602944
| | 1
|
A210574 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 7 | 15 | 31 | 63 | 127 | 255
| | | 1 | 12 | 50 | 180 | 602 | 1932 | 6050
| | | | 1 | 264 | 1920 | 11760 | 66024 | 353304
| | | | | 1 | 11970 | 146160 | 1477980 | 13556970
| | | | | | 1 | 1689600 | 34214400 | 568656000
| | | | | | | 1 | 603233280 | 20043279360
| | | | | | | | 1 | 586244602944
| | | | | | | | | 1
|
|
