A161564 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 0 | | 1 |
| | | | | | | | | 2 | | 0 | | 2 |
| | | | | | | | 5 | | 2 | | 0 | | 3 |
| | | | | | | 12 | | 5 | | 4 | | 0 | | 5 |
| | | | | | 24 | | 12 | | 10 | | 6 | | 0 | | 7 |
| | | | | 56 | | 24 | | 24 | | 15 | | 10 | | 0 | | 11 |
| | | | 113 | | 56 | | 48 | | 36 | | 25 | | 14 | | 0 | | 15 |
| | | 248 | | 113 | | 112 | | 72 | | 60 | | 35 | | 22 | | 0 | | 22 |
| | 503 | | 248 | | 226 | | 168 | | 120 | | 84 | | 55 | | 30 | | 0 | | 30 |
|
A161564 as a square array
1 | 0 | 2 | 5 | 12 | 24 | 56 | 113 | 248 | 503
| 1 | 0 | 2 | 5 | 12 | 24 | 56 | 113 | 248
| 2 | 0 | 4 | 10 | 24 | 48 | 112 | 226
| 3 | 0 | 6 | 15 | 36 | 72 | 168
| 5 | 0 | 10 | 25 | 60 | 120
| 7 | 0 | 14 | 35 | 84
| 11 | 0 | 22 | 55
| 15 | 0 | 30
| 22 | 0
| 30
|
A161564 as an upper right triangle
1 | 0 | 2 | 5 | 12 | 24 | 56 | 113 | 248 | 503
| | 1 | 0 | 2 | 5 | 12 | 24 | 56 | 113 | 248
| | | 2 | 0 | 4 | 10 | 24 | 48 | 112 | 226
| | | | 3 | 0 | 6 | 15 | 36 | 72 | 168
| | | | | 5 | 0 | 10 | 25 | 60 | 120
| | | | | | 7 | 0 | 14 | 35 | 84
| | | | | | | 11 | 0 | 22 | 55
| | | | | | | | 15 | 0 | 30
| | | | | | | | | 22 | 0
| | | | | | | | | | 30
|
|