A220555 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 3 | | 1 |
| | | | | | | | | 1 | | 7 | | 8 | | 1 |
| | | | | | | | 1 | | 7 | | 26 | | 6 | | 1 |
| | | | | | | 1 | | 31 | | 18 | | 14 | | 20 | | 1 |
| | | | | | 1 | | 63 | | 121 | | 14 | | 62 | | 24 | | 1 |
| | | | | 1 | | 15 | | 26 | | 62 | | 62 | | 182 | | 16 | | 1 |
| | | | 1 | | 15 | | 24 | | 126 | | 781 | | 126 | | 42 | | 12 | | 1 |
| | | 1 | | 511 | | 1640 | | 30 | | 24 | | 3751 | | 114 | | 28 | | 24 | | 1 |
| | 1 | | 63 | | 9841 | | 30 | | 20 | | 1638 | | 2801 | | 28 | | 78 | | 60 | | 1 |
|
A220555 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 7 | 7 | 31 | 63 | 15 | 15 | 511 | 63
| | 1 | 8 | 26 | 18 | 121 | 26 | 24 | 1640 | 9841
| | 1 | 6 | 14 | 14 | 62 | 126 | 30 | 30
| | 1 | 20 | 62 | 62 | 781 | 24 | 20
| | 1 | 24 | 182 | 126 | 3751 | 1638
| | 1 | 16 | 42 | 114 | 2801
| | 1 | 12 | 28 | 28
| | 1 | 24 | 78
| | 1 | 60
| | 1
|
A220555 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 7 | 7 | 31 | 63 | 15 | 15 | 511 | 63
| | | 1 | 8 | 26 | 18 | 121 | 26 | 24 | 1640 | 9841
| | | | 1 | 6 | 14 | 14 | 62 | 126 | 30 | 30
| | | | | 1 | 20 | 62 | 62 | 781 | 24 | 20
| | | | | | 1 | 24 | 182 | 126 | 3751 | 1638
| | | | | | | 1 | 16 | 42 | 114 | 2801
| | | | | | | | 1 | 12 | 28 | 28
| | | | | | | | | 1 | 24 | 78
| | | | | | | | | | 1 | 60
| | | | | | | | | | | 1
|
|
