A173221 as a triangular array
| | | | | 0 |
| | | | | 1 | | 2 |
| | | | 60 | | 3528 | | 377620 |
| | | 63642600 | | 15485843814 | | 5128034120832 | | 2214330161840640 |
| | 1207205860726123200 | | 810202288257005858280 | | 655934516902959161345280 | | 630002861547863478457648320 |
|
A173221 as a square array
| 0 | 1 | 60 | 63642600 | 1207205860726123200
| | 2 | 3528 | 15485843814 | 810202288257005858280
| | 377620 | 5128034120832 | 655934516902959161345280
| | 2214330161840640 | 630002861547863478457648320
|
A173221 as an upper right triangle
| 0 | 1 | 60 | 63642600 | 1207205860726123200
| | 2 | 3528 | 15485843814 | 810202288257005858280
| | | 377620 | 5128034120832 | 655934516902959161345280
| | | | 2214330161840640 | 630002861547863478457648320
| | | |
|
|
