A111959 as a triangular array
| | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | 0 | | 1 |
| | | | | | | | | | | | 2 | | 0 | | 1 |
| | | | | | | | | | | 0 | | 4 | | 0 | | 1 |
| | | | | | | | | | 6 | | 0 | | 6 | | 0 | | 1 |
| | | | | | | | | 0 | | 16 | | 0 | | 8 | | 0 | | 1 |
| | | | | | | | 20 | | 0 | | 30 | | 0 | | 10 | | 0 | | 1 |
| | | | | | | 0 | | 64 | | 0 | | 48 | | 0 | | 12 | | 0 | | 1 |
| | | | | | 70 | | 0 | | 140 | | 0 | | 70 | | 0 | | 14 | | 0 | | 1 |
| | | | | 0 | | 256 | | 0 | | 256 | | 0 | | 96 | | 0 | | 16 | | 0 | | 1 |
| | | | 252 | | 0 | | 630 | | 0 | | 420 | | 0 | | 126 | | 0 | | 18 | | 0 | | 1 |
| | | 0 | | 1024 | | 0 | | 1280 | | 0 | | 640 | | 0 | | 160 | | 0 | | 20 | | 0 | | 1 |
| | 924 | | 0 | | 2772 | | 0 |
|
A111959 as a square array
| 1 | 0 | 2 | 0 | 6 | 0 | 20 | 0 | 70 | 0 | 252 | 0 | 924
| | 1 | 0 | 4 | 0 | 16 | 0 | 64 | 0 | 256 | 0 | 1024 | 0
| | 1 | 0 | 6 | 0 | 30 | 0 | 140 | 0 | 630 | 0 | 2772
| | 1 | 0 | 8 | 0 | 48 | 0 | 256 | 0 | 1280 | 0
| | 1 | 0 | 10 | 0 | 70 | 0 | 420 | 0
| | 1 | 0 | 12 | 0 | 96 | 0 | 640
| | 1 | 0 | 14 | 0 | 126 | 0
| | 1 | 0 | 16 | 0 | 160
| | 1 | 0 | 18 | 0
| | 1 | 0 | 20
| | 1 | 0
| | 1
|
A111959 as an upper right triangle
| 1 | 0 | 2 | 0 | 6 | 0 | 20 | 0 | 70 | 0 | 252 | 0 | 924
| | 1 | 0 | 4 | 0 | 16 | 0 | 64 | 0 | 256 | 0 | 1024 | 0
| | | 1 | 0 | 6 | 0 | 30 | 0 | 140 | 0 | 630 | 0 | 2772
| | | | 1 | 0 | 8 | 0 | 48 | 0 | 256 | 0 | 1280 | 0
| | | | | 1 | 0 | 10 | 0 | 70 | 0 | 420 | 0
| | | | | | 1 | 0 | 12 | 0 | 96 | 0 | 640
| | | | | | | 1 | 0 | 14 | 0 | 126 | 0
| | | | | | | | 1 | 0 | 16 | 0 | 160
| | | | | | | | | 1 | 0 | 18 | 0
| | | | | | | | | | 1 | 0 | 20
| | | | | | | | | | | 1 | 0
| | | | | | | | | | | | 1
| | | | | | | | | | | |
|
|
