A131218 as a triangular array
| | | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | | | 1 | | 0 | | 1 |
| | | | | | | | | | | | 1 | | 0 | | 0 | | 1 |
| | | | | | | | | | | 1 | | 1 | | 0 | | 1 | | 1 |
| | | | | | | | | | 1 | | 1 | | 0 | | 0 | | 1 | | 1 |
| | | | | | | | | 1 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | | | | | | | 1 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | | | | | | 1 | | 1 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 | | 1 |
| | | | | | 1 | | 1 | | 1 | | 1 | | 0 | | 0 | | 1 | | 1 | | 1 | | 1 |
| | | | | 1 | | 0 | | 1 | | 1 | | 0 | | 0 | | 0 | | 1 | | 1 | | 0 | | 1 |
| | | | 1 | | 0 | | 0 | | 1 | | 0 | | 0 | | 0 | | 0 | | 1 | | 0 | | 0 | | 1 |
| | | 1 | | 1 | | 0 | | 1 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 | | 0 | | 1 | | 1 |
| | 1 | | 1 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 | | 1 |
|
A131218 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1
| | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0
| | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0
| | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0
| | 1 | 1 | 1 | 1 | 0 | 0 | 0
| | 1 | 1 | 1 | 1 | 0 | 0
| | 1 | 0 | 0 | 1 | 0
| | 1 | 0 | 0 | 0
| | 1 | 1 | 0
| | 1 | 1
| | 1
|
A131218 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1
| | | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0
| | | | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0
| | | | | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | | | | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | | | | | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0
| | | | | | | | 1 | 1 | 1 | 1 | 0 | 0 | 0
| | | | | | | | | 1 | 1 | 1 | 1 | 0 | 0
| | | | | | | | | | 1 | 0 | 0 | 1 | 0
| | | | | | | | | | | 1 | 0 | 0 | 0
| | | | | | | | | | | | 1 | 1 | 0
| | | | | | | | | | | | | 1 | 1
| | | | | | | | | | | | | | 1
|
|
