A090447 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 2 | | 2 |
| | | | | | | | 1 | | 3 | | 9 | | 9 |
| | | | | | | 1 | | 4 | | 24 | | 96 | | 96 |
| | | | | | 1 | | 5 | | 50 | | 500 | | 2500 | | 2500 |
| | | | | 1 | | 6 | | 90 | | 1800 | | 27000 | | 162000 | | 162000 |
| | | | 1 | | 7 | | 147 | | 5145 | | 180075 | | 3781575 | | 26471025 | | 26471025 |
| | | 1 | | 8 | | 224 | | 12544 | | 878080 | | 49172480 | | 1376829440 | | 11014635520 | | 11014635520 |
| | 1 | | 9 | | 324 |
|
A090447 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
| | 2 | 9 | 24 | 50 | 90 | 147 | 224 | 324
| | 9 | 96 | 500 | 1800 | 5145 | 12544
| | 96 | 2500 | 27000 | 180075 | 878080
| | 2500 | 162000 | 3781575 | 49172480
| | 162000 | 26471025 | 1376829440
| | 26471025 | 11014635520
| | 11014635520
|
A090447 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
| | | 2 | 9 | 24 | 50 | 90 | 147 | 224 | 324
| | | | 9 | 96 | 500 | 1800 | 5145 | 12544
| | | | | 96 | 2500 | 27000 | 180075 | 878080
| | | | | | 2500 | 162000 | 3781575 | 49172480
| | | | | | | 162000 | 26471025 | 1376829440
| | | | | | | | 26471025 | 11014635520
| | | | | | | | | 11014635520
| | | | | | | | |
|
|
