A171128 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 3 | | 2 | | 1 |
| | | | | | | | 7 | | 9 | | 3 | | 1 |
| | | | | | | 19 | | 28 | | 18 | | 4 | | 1 |
| | | | | | 51 | | 95 | | 70 | | 30 | | 5 | | 1 |
| | | | | 141 | | 306 | | 285 | | 140 | | 45 | | 6 | | 1 |
| | | | 393 | | 987 | | 1071 | | 665 | | 245 | | 63 | | 7 | | 1 |
| | | 1107 | | 3144 | | 3948 | | 2856 | | 1330 | | 392 | | 84 | | 8 | | 1 |
| | 3139 | | 9963 | | 14148 | | 11844 | | 6426 | | 2394 | | 588 | | 108 | | 9 | | 1 |
|
A171128 as a square array
| 1 | 1 | 3 | 7 | 19 | 51 | 141 | 393 | 1107 | 3139
| | 1 | 2 | 9 | 28 | 95 | 306 | 987 | 3144 | 9963
| | 1 | 3 | 18 | 70 | 285 | 1071 | 3948 | 14148
| | 1 | 4 | 30 | 140 | 665 | 2856 | 11844
| | 1 | 5 | 45 | 245 | 1330 | 6426
| | 1 | 6 | 63 | 392 | 2394
| | 1 | 7 | 84 | 588
| | 1 | 8 | 108
| | 1 | 9
| | 1
|
A171128 as an upper right triangle
| 1 | 1 | 3 | 7 | 19 | 51 | 141 | 393 | 1107 | 3139
| | 1 | 2 | 9 | 28 | 95 | 306 | 987 | 3144 | 9963
| | | 1 | 3 | 18 | 70 | 285 | 1071 | 3948 | 14148
| | | | 1 | 4 | 30 | 140 | 665 | 2856 | 11844
| | | | | 1 | 5 | 45 | 245 | 1330 | 6426
| | | | | | 1 | 6 | 63 | 392 | 2394
| | | | | | | 1 | 7 | 84 | 588
| | | | | | | | 1 | 8 | 108
| | | | | | | | | 1 | 9
| | | | | | | | | | 1
|
|
