A168021 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 2 | | 1 |
| | | | | | | | | | | 3 | | 0 | | 1 |
| | | | | | | | | | 5 | | 2 | | 0 | | 1 |
| | | | | | | | | 7 | | 0 | | 0 | | 0 | | 1 |
| | | | | | | | 11 | | 3 | | 2 | | 0 | | 0 | | 1 |
| | | | | | | 15 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | | | | | 22 | | 5 | | 0 | | 2 | | 0 | | 0 | | 0 | | 1 |
| | | | | 30 | | 0 | | 3 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | | | 42 | | 7 | | 0 | | 0 | | 2 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | | 56 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | 77 | | 11 | | 5 | | 3 | | 0 | | 2 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 |
|
A168021 as a square array
1 | 2 | 3 | 5 | 7 | 11 | 15 | 22 | 30 | 42 | 56 | 77
| 1 | 0 | 2 | 0 | 3 | 0 | 5 | 0 | 7 | 0 | 11
| 1 | 0 | 0 | 2 | 0 | 0 | 3 | 0 | 0 | 5
| 1 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 3
| 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0
| 1 | 0 | 0 | 0 | 0 | 0 | 2
| 1 | 0 | 0 | 0 | 0 | 0
| 1 | 0 | 0 | 0 | 0
| 1 | 0 | 0 | 0
| 1 | 0 | 0
| 1 | 0
| 1
|
A168021 as an upper right triangle
1 | 2 | 3 | 5 | 7 | 11 | 15 | 22 | 30 | 42 | 56 | 77
| | 1 | 0 | 2 | 0 | 3 | 0 | 5 | 0 | 7 | 0 | 11
| | | 1 | 0 | 0 | 2 | 0 | 0 | 3 | 0 | 0 | 5
| | | | 1 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 3
| | | | | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0
| | | | | | 1 | 0 | 0 | 0 | 0 | 0 | 2
| | | | | | | 1 | 0 | 0 | 0 | 0 | 0
| | | | | | | | 1 | 0 | 0 | 0 | 0
| | | | | | | | | 1 | 0 | 0 | 0
| | | | | | | | | | 1 | 0 | 0
| | | | | | | | | | | 1 | 0
| | | | | | | | | | | | 1
|
|