A227558 as a triangular array
| | | | | | | | | | 2 |
| | | | | | | | | | 4 | | 4 |
| | | | | | | | | 7 | | 12 | | 7 |
| | | | | | | | 11 | | 33 | | 33 | | 11 |
| | | | | | | 16 | | 81 | | 147 | | 81 | | 16 |
| | | | | | 22 | | 179 | | 585 | | 585 | | 179 | | 22 |
| | | | | 29 | | 362 | | 2080 | | 3939 | | 2080 | | 362 | | 29 |
| | | | 37 | | 680 | | 6653 | | 23940 | | 23940 | | 6653 | | 680 | | 37 |
| | | 46 | | 1201 | | 19356 | | 130231 | | 256067 | | 130231 | | 19356 | | 1201 | | 46 |
| | 56 | | 2014 | | 51827 | | 635595 | | 2474769 | | 2474769 |
|
A227558 as a square array
2 | 4 | 7 | 11 | 16 | 22 | 29 | 37 | 46 | 56
| 4 | 12 | 33 | 81 | 179 | 362 | 680 | 1201 | 2014
| 7 | 33 | 147 | 585 | 2080 | 6653 | 19356 | 51827
| 11 | 81 | 585 | 3939 | 23940 | 130231 | 635595
| 16 | 179 | 2080 | 23940 | 256067 | 2474769
| 22 | 362 | 6653 | 130231 | 2474769
| 29 | 680 | 19356
| 37 | 1201
| 46
|
A227558 as an upper right triangle
2 | 4 | 7 | 11 | 16 | 22 | 29 | 37 | 46 | 56
| | 4 | 12 | 33 | 81 | 179 | 362 | 680 | 1201 | 2014
| | | 7 | 33 | 147 | 585 | 2080 | 6653 | 19356 | 51827
| | | | 11 | 81 | 585 | 3939 | 23940 | 130231 | 635595
| | | | | 16 | 179 | 2080 | 23940 | 256067 | 2474769
| | | | | | 22 | 362 | 6653 | 130231 | 2474769
| | | | | | | 29 | 680 | 19356
| | | | | | | | 37 | 1201
| | | | | | | | | 46
| | | | | | | | |
|
|