A051168 as a triangular array
| | | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | | | 0 | | 1 | | 0 |
| | | | | | | | | | | | 0 | | 1 | | 1 | | 0 |
| | | | | | | | | | | 0 | | 1 | | 1 | | 1 | | 0 |
| | | | | | | | | | 0 | | 1 | | 2 | | 2 | | 1 | | 0 |
| | | | | | | | | 0 | | 1 | | 2 | | 3 | | 2 | | 1 | | 0 |
| | | | | | | | 0 | | 1 | | 3 | | 5 | | 5 | | 3 | | 1 | | 0 |
| | | | | | | 0 | | 1 | | 3 | | 7 | | 8 | | 7 | | 3 | | 1 | | 0 |
| | | | | | 0 | | 1 | | 4 | | 9 | | 14 | | 14 | | 9 | | 4 | | 1 | | 0 |
| | | | | 0 | | 1 | | 4 | | 12 | | 20 | | 25 | | 20 | | 12 | | 4 | | 1 | | 0 |
| | | | 0 | | 1 | | 5 | | 15 | | 30 | | 42 | | 42 | | 30 | | 15 | | 5 | | 1 | | 0 |
| | | 0 | | 1 | | 5 | | 18 | | 40 | | 66 | | 75 | | 66 | | 40 | | 18 | | 5 | | 1 | | 0 |
| | 0 | | 1 | | 6 |
|
A051168 as a square array
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 0 | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6
| | 0 | 1 | 2 | 3 | 5 | 7 | 9 | 12 | 15 | 18
| | 0 | 1 | 2 | 5 | 8 | 14 | 20 | 30 | 40
| | 0 | 1 | 3 | 7 | 14 | 25 | 42 | 66
| | 0 | 1 | 3 | 9 | 20 | 42 | 75
| | 0 | 1 | 4 | 12 | 30 | 66
| | 0 | 1 | 4 | 15 | 40
| | 0 | 1 | 5 | 18
| | 0 | 1 | 5
| | 0 | 1
| | 0
|
A051168 as an upper right triangle
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | | 0 | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6
| | | | 0 | 1 | 2 | 3 | 5 | 7 | 9 | 12 | 15 | 18
| | | | | 0 | 1 | 2 | 5 | 8 | 14 | 20 | 30 | 40
| | | | | | 0 | 1 | 3 | 7 | 14 | 25 | 42 | 66
| | | | | | | 0 | 1 | 3 | 9 | 20 | 42 | 75
| | | | | | | | 0 | 1 | 4 | 12 | 30 | 66
| | | | | | | | | 0 | 1 | 4 | 15 | 40
| | | | | | | | | | 0 | 1 | 5 | 18
| | | | | | | | | | | 0 | 1 | 5
| | | | | | | | | | | | 0 | 1
| | | | | | | | | | | | | 0
| | | | | | | | | | | | |
|
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