The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1440 |
| 2 | 2073600 |
| 3 | 1037800112 |
| 4 | 532255213048 |
| 5 | 269004461507864 |
| 6 | 139281562211310598 |
| 7 | 72904426459924759331 |
[1440,2073600,1037800112,532255213048, 269004461507864,139281562211310598, 72904426459924759331] |