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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 3 |
| 4 | 39 |
| 5 | 32163 |
| 6 | 1720635 |
| 7 | 12345020175 |
| 8 | 1530993953307 |
| 9 | 44148864630732711 |
| 10 | 797213247855503373843915 |
| 11 | 281095572810489332134542303 |
| 12 | 26242778669866462496740532647355475 |
[1,3,39,32163,1720635,12345020175,1530993953307, 44148864630732711,797213247855503373843915, 281095572810489332134542303, 26242778669866462496740532647355475] |