A206831 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | -1 | | 0 | | 1 |
| | | | | | | | | -1 | | -3 | | -1 | | 1 |
| | | | | | | | 1 | | 0 | | -4 | | -2 | | 1 |
| | | | | | | 1 | | 5 | | 4 | | -4 | | -3 | | 1 |
| | | | | | -1 | | 0 | | 9 | | 10 | | -3 | | -4 | | 1 |
| | | | | -1 | | -7 | | -9 | | 9 | | 17 | | -1 | | -5 | | 1 |
| | | | 1 | | 0 | | -16 | | -28 | | 2 | | 24 | | 2 | | -6 | | 1 |
| | | 1 | | 9 | | 16 | | -16 | | -54 | | -14 | | 30 | | 6 | | -7 | | 1 |
| | -1 | | 0 | | 25 | | 60 | | 10 |
|
A206831 as a square array
| 1 | 1 | -1 | -1 | 1 | 1 | -1 | -1 | 1 | 1 | -1
| | 1 | 0 | -3 | 0 | 5 | 0 | -7 | 0 | 9 | 0
| | 1 | -1 | -4 | 4 | 9 | -9 | -16 | 16 | 25
| | 1 | -2 | -4 | 10 | 9 | -28 | -16 | 60
| | 1 | -3 | -3 | 17 | 2 | -54 | 10
| | 1 | -4 | -1 | 24 | -14
| | 1 | -5 | 2 | 30
| | 1 | -6 | 6
| | 1 | -7
| | 1
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A206831 as an upper right triangle
| 1 | 1 | -1 | -1 | 1 | 1 | -1 | -1 | 1 | 1 | -1
| | 1 | 0 | -3 | 0 | 5 | 0 | -7 | 0 | 9 | 0
| | | 1 | -1 | -4 | 4 | 9 | -9 | -16 | 16 | 25
| | | | 1 | -2 | -4 | 10 | 9 | -28 | -16 | 60
| | | | | 1 | -3 | -3 | 17 | 2 | -54 | 10
| | | | | | 1 | -4 | -1 | 24 | -14
| | | | | | | 1 | -5 | 2 | 30
| | | | | | | | 1 | -6 | 6
| | | | | | | | | 1 | -7
| | | | | | | | | | 1
| | | | | | | | | |
|
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