A121301 as a triangular array
| | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | | 4 | | 0 | | 1 |
| | | | | | | | | | | 10 | | 2 | | 0 | | 1 |
| | | | | | | | | | 28 | | 5 | | 0 | | 0 | | 1 |
| | | | | | | | | 75 | | 10 | | 3 | | 0 | | 0 | | 1 |
| | | | | | | | 202 | | 23 | | 7 | | 0 | | 0 | | 0 | | 1 |
| | | | | | | 540 | | 57 | | 8 | | 4 | | 0 | | 0 | | 0 | | 1 |
| | | | | | 1440 | | 129 | | 18 | | 9 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | | | | 3828 | | 294 | | 43 | | 10 | | 5 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | | | 10153 | | 680 | | 90 | | 11 | | 11 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | | 26875 | | 1557 | | 178 | | 28 | | 12 | | 6 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | 71021 | | 3546 |
|
A121301 as a square array
1 | 1 | 4 | 10 | 28 | 75 | 202 | 540 | 1440 | 3828 | 10153 | 26875 | 71021
| 1 | 0 | 2 | 5 | 10 | 23 | 57 | 129 | 294 | 680 | 1557 | 3546
| 1 | 0 | 0 | 3 | 7 | 8 | 18 | 43 | 90 | 178
| 1 | 0 | 0 | 0 | 4 | 9 | 10 | 11 | 28
| 1 | 0 | 0 | 0 | 0 | 5 | 11 | 12
| 1 | 0 | 0 | 0 | 0 | 0 | 6
| 1 | 0 | 0 | 0 | 0 | 0
| 1 | 0 | 0 | 0 | 0
| 1 | 0 | 0 | 0
| 1 | 0 | 0
| 1 | 0
| 1
|
A121301 as an upper right triangle
1 | 1 | 4 | 10 | 28 | 75 | 202 | 540 | 1440 | 3828 | 10153 | 26875 | 71021
| | 1 | 0 | 2 | 5 | 10 | 23 | 57 | 129 | 294 | 680 | 1557 | 3546
| | | 1 | 0 | 0 | 3 | 7 | 8 | 18 | 43 | 90 | 178
| | | | 1 | 0 | 0 | 0 | 4 | 9 | 10 | 11 | 28
| | | | | 1 | 0 | 0 | 0 | 0 | 5 | 11 | 12
| | | | | | 1 | 0 | 0 | 0 | 0 | 0 | 6
| | | | | | | 1 | 0 | 0 | 0 | 0 | 0
| | | | | | | | 1 | 0 | 0 | 0 | 0
| | | | | | | | | 1 | 0 | 0 | 0
| | | | | | | | | | 1 | 0 | 0
| | | | | | | | | | | 1 | 0
| | | | | | | | | | | | 1
| | | | | | | | | | | |
|
|