A048601 formatted as a triangular array:
| | | | | | | 1 | | | | | | | |
| | | | | | 1 | | 1 | | | | | | |
| | | | | 2 | | 3 | | 2 | | | | | |
| | | | 7 | | 14 | | 14 | | 7 | | | | |
| | | 42 | | 105 | | 135 | | 105 | | 42 | | | |
| | 429 | | 1287 | | 2002 | | 2002 | | 1287 | | 429 | | |
| 7436 | | 26026 | | 47320 | | 56784 | | 47320 | | 26026 | | 7436 | |
| 218348 | | 873392 | | 1813968 | | 2519400 | | 2519400 | | 1813968 | | 873392 | | 218348 |
A048601 formatted as a square array:
| 1 | 1 | 2 | 7 | 42 | 429 | 7436 | 218348 |
| 1 | 3 | 14 | 105 | 1287 | 26026 | 873392 | |
| 2 | 14 | 135 | 2002 | 47320 | 1813968 | | |
| 7 | 105 | 2002 | 56784 | 2519400 | | | |
| 42 | 1287 | 47320 | 2519400 | | | | |
| 429 | 26026 | 1813968 | | | | | |
| 7436 | 873392 | | | | | | |
| 218348 | | | | | | | |
A048601 formatted as an upper right triangle:
| 1 | 1 | 2 | 7 | 42 | 429 | 7436 | 218348 |
| 1 | 3 | 14 | 105 | 1287 | 26026 | 873392 |
| | 2 | 14 | 135 | 2002 | 47320 | 1813968 |
| | | 7 | 105 | 2002 | 56784 | 2519400 |
| | | | 42 | 1287 | 47320 | 2519400 |
| | | | | 429 | 26026 | 1813968 |
| | | | | | 7436 | 873392 |
| | | | | | | 218348 |
|
