A230031 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 0 | | 1 |
| | | | | | | | | | 1 | | 0 | | 0 | | 1 |
| | | | | | | | | 1 | | 0 | | 1 | | 0 | | 1 |
| | | | | | | | 1 | | 1 | | 0 | | 0 | | 1 | | 1 |
| | | | | | | 1 | | 0 | | 4 | | 0 | | 4 | | 0 | | 1 |
| | | | | | 1 | | 0 | | 0 | | 23 | | 23 | | 0 | | 0 | | 1 |
| | | | | 1 | | 0 | | 9 | | 0 | | 117 | | 0 | | 9 | | 0 | | 1 |
| | | | 1 | | 1 | | 0 | | 0 | | 454 | | 454 | | 0 | | 0 | | 1 | | 1 |
| | | 1 | | 0 | | 25 | | 0 | | 2003 | | 0 | | 2003 | | 0 | | 25 | | 0 | | 1 |
| | 1 | | 0 | | 0 | | 997 | | 9157 | | 0 | | 0 | | 9157 | | 997 | | 0 | | 0 | | 1 |
|
A230031 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0
| 1 | 0 | 1 | 0 | 4 | 0 | 9 | 0 | 25 | 0
| 1 | 0 | 0 | 0 | 23 | 0 | 0 | 0 | 997
| 1 | 1 | 4 | 23 | 117 | 454 | 2003 | 9157
| 1 | 0 | 0 | 0 | 454 | 0 | 0
| 1 | 0 | 9 | 0 | 2003 | 0
| 1 | 0 | 0 | 0 | 9157
| 1 | 1 | 25 | 997
| 1 | 0 | 0
| 1 | 0
| 1
|
A230031 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0
| | | 1 | 0 | 1 | 0 | 4 | 0 | 9 | 0 | 25 | 0
| | | | 1 | 0 | 0 | 0 | 23 | 0 | 0 | 0 | 997
| | | | | 1 | 1 | 4 | 23 | 117 | 454 | 2003 | 9157
| | | | | | 1 | 0 | 0 | 0 | 454 | 0 | 0
| | | | | | | 1 | 0 | 9 | 0 | 2003 | 0
| | | | | | | | 1 | 0 | 0 | 0 | 9157
| | | | | | | | | 1 | 1 | 25 | 997
| | | | | | | | | | 1 | 0 | 0
| | | | | | | | | | | 1 | 0
| | | | | | | | | | | | 1
|
|