A290320 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 1 | | 0 |
| | | | | | | | | | 1 | | 2 | | 2 | | 1 |
| | | | | | | | | 1 | | 2 | | 2 | | 1 | | 0 |
| | | | | | | | 1 | | 3 | | 4 | | 2 | | 0 | | 0 |
| | | | | | | 1 | | 3 | | 5 | | 5 | | 3 | | 1 | | 0 |
| | | | | | 1 | | 4 | | 9 | | 13 | | 13 | | 9 | | 4 | | 1 |
| | | | | 1 | | 4 | | 9 | | 13 | | 13 | | 9 | | 4 | | 1 | | 0 |
| | | | 1 | | 5 | | 14 | | 25 | | 30 | | 24 | | 12 | | 3 | | 0 | | 0 |
| | | 1 | | 5 | | 15 | | 30 | | 42 | | 42 | | 30 | | 15 | | 5 | | 1 | | 0 |
| | 1 | | 6 | | 21 | | 48 | | 75 | | 81 | | 60 | | 30 | | 10 | | 2 | | 0 | | 0 |
|
A290320 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6
| | 0 | 2 | 2 | 4 | 5 | 9 | 9 | 14 | 15 | 21
| | 1 | 1 | 2 | 5 | 13 | 13 | 25 | 30 | 48
| | 0 | 0 | 3 | 13 | 13 | 30 | 42 | 75
| | 0 | 1 | 9 | 9 | 24 | 42 | 81
| | 0 | 4 | 4 | 12 | 30 | 60
| | 1 | 1 | 3 | 15 | 30
| | 0 | 0 | 5 | 10
| | 0 | 1 | 2
| | 0 | 0
| | 0
|
A290320 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6
| | | 0 | 2 | 2 | 4 | 5 | 9 | 9 | 14 | 15 | 21
| | | | 1 | 1 | 2 | 5 | 13 | 13 | 25 | 30 | 48
| | | | | 0 | 0 | 3 | 13 | 13 | 30 | 42 | 75
| | | | | | 0 | 1 | 9 | 9 | 24 | 42 | 81
| | | | | | | 0 | 4 | 4 | 12 | 30 | 60
| | | | | | | | 1 | 1 | 3 | 15 | 30
| | | | | | | | | 0 | 0 | 5 | 10
| | | | | | | | | | 0 | 1 | 2
| | | | | | | | | | | 0 | 0
| | | | | | | | | | | | 0
|
|
