A201730 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 2 | | 0 |
| | | | | | | | | 5 | | 1 | | 0 |
| | | | | | | | 14 | | 6 | | 0 | | 0 |
| | | | | | | 41 | | 26 | | 1 | | 0 | | 0 |
| | | | | | 122 | | 100 | | 10 | | 0 | | 0 | | 0 |
| | | | | 365 | | 363 | | 63 | | 1 | | 0 | | 0 | | 0 |
| | | | 1094 | | 1274 | | 322 | | 14 | | 0 | | 0 | | 0 | | 0 |
| | | 3281 | | 4372 | | 1462 | | 116 | | 1 | | 0 | | 0 | | 0 | | 0 |
| | 9842 | | 14760 | | 6156 | | 744 | | 18 | | 0 | | 0 | | 0 | | 0 | | 0 |
|
A201730 as a square array
1 | 2 | 5 | 14 | 41 | 122 | 365 | 1094 | 3281 | 9842
| 0 | 1 | 6 | 26 | 100 | 363 | 1274 | 4372 | 14760
| 0 | 0 | 1 | 10 | 63 | 322 | 1462 | 6156
| 0 | 0 | 0 | 1 | 14 | 116 | 744
| 0 | 0 | 0 | 0 | 1 | 18
| 0 | 0 | 0 | 0 | 0
| 0 | 0 | 0 | 0
| 0 | 0 | 0
| 0 | 0
| 0
|
A201730 as an upper right triangle
1 | 2 | 5 | 14 | 41 | 122 | 365 | 1094 | 3281 | 9842
| | 0 | 1 | 6 | 26 | 100 | 363 | 1274 | 4372 | 14760
| | | 0 | 0 | 1 | 10 | 63 | 322 | 1462 | 6156
| | | | 0 | 0 | 0 | 1 | 14 | 116 | 744
| | | | | 0 | 0 | 0 | 0 | 1 | 18
| | | | | | 0 | 0 | 0 | 0 | 0
| | | | | | | 0 | 0 | 0 | 0
| | | | | | | | 0 | 0 | 0
| | | | | | | | | 0 | 0
| | | | | | | | | | 0
|
|