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| n | a(n) |
|---|---|
| 21 | 654729075 |
| 22 | 2862426470400 |
| 23 | 1296211708989225 |
| 24 | 261264015391703040 |
| 25 | 34500885158438507610 |
| 26 | 3502077835791610920960 |
| 27 | 297315399971212318577070 |
| 28 | 22214713615158982916505600 |
| 29 | 1510589164324758020706100635 |
| 30 | 95690236900543163501872250880 |
| 31 | 5743287914726512704740717709585 |
[654729075,2862426470400,1296211708989225, 261264015391703040,34500885158438507610, 3502077835791610920960,297315399971212318577070, 22214713615158982916505600, 1510589164324758020706100635, 95690236900543163501872250880, 5743287914726512704740717709585] |