A299721 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 5 | | 1 |
| | | | | | | | 1 | | 13 | | 13 | | 1 |
| | | | | | | 1 | | 42 | | 46 | | 42 | | 1 |
| | | | | | 1 | | 127 | | 246 | | 246 | | 127 | | 1 |
| | | | | 1 | | 389 | | 1205 | | 2545 | | 1205 | | 389 | | 1 |
| | | | 1 | | 1192 | | 6354 | | 23877 | | 23877 | | 6354 | | 1192 | | 1 |
| | | 1 | | 3645 | | 33804 | | 242107 | | 439647 | | 242107 | | 33804 | | 3645 | | 1 |
| | 1 | | 11161 | | 182056 | | 2501312 | | 8668148 | | 8668148 |
|
A299721 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 5 | 13 | 42 | 127 | 389 | 1192 | 3645 | 11161
| | 1 | 13 | 46 | 246 | 1205 | 6354 | 33804 | 182056
| | 1 | 42 | 246 | 2545 | 23877 | 242107 | 2501312
| | 1 | 127 | 1205 | 23877 | 439647 | 8668148
| | 1 | 389 | 6354 | 242107 | 8668148
| | 1 | 1192 | 33804
| | 1 | 3645
| | 1
|
A299721 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 5 | 13 | 42 | 127 | 389 | 1192 | 3645 | 11161
| | | 1 | 13 | 46 | 246 | 1205 | 6354 | 33804 | 182056
| | | | 1 | 42 | 246 | 2545 | 23877 | 242107 | 2501312
| | | | | 1 | 127 | 1205 | 23877 | 439647 | 8668148
| | | | | | 1 | 389 | 6354 | 242107 | 8668148
| | | | | | | 1 | 1192 | 33804
| | | | | | | | 1 | 3645
| | | | | | | | | 1
| | | | | | | | |
|
|
