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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 148 |
| 4 | 3851 |
| 5 | 104100 |
| 6 | 3292184 |
| 7 | 100766213 |
| 8 | 3061629439 |
| 9 | 93391009587 |
| 10 | 2848083212818 |
| 11 | 86830428575045 |
| 12 | 2647502223122183 |
| 13 | 80723479583077760 |
| 14 | 2461270742015683063 |
| 15 | 75044735473463888913 |
| 16 | 2288131799382045208904 |
| 17 | 69765663287027937162894 |
| 18 | 2127171274594978600181825 |
[1,148,3851,104100,3292184,100766213,3061629439, 93391009587,2848083212818,86830428575045, 2647502223122183,80723479583077760, 2461270742015683063,75044735473463888913, 2288131799382045208904,69765663287027937162894, 2127171274594978600181825] |