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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 31 |
| 3 | 7502 |
| 4 | 7441984 |
| 5 | 23248758016 |
| 6 | 174412182636032 |
| 7 | 2931171141381153792 |
| 8 | 93047096712003345973248 |
| 9 | 5471727569246068763302821888 |
| 10 | 529903984716066283313298482921472 |
| 11 | 85341036738522474927606720674503065600 |
| 12 | 20487310643596659421020979792003903940198400 |
[1,31,7502,7441984,23248758016,174412182636032, 2931171141381153792,93047096712003345973248, 5471727569246068763302821888, 529903984716066283313298482921472, 85341036738522474927606720674503065600, 20487310643596659421020979792003903940198400] |