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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 1024 |
| 3 | 108900 |
| 4 | 12931216 |
| 5 | 1501795009 |
| 6 | 174892912804 |
| 7 | 20353081850721 |
| 8 | 2368756732515625 |
| 9 | 275676538509042724 |
| 10 | 32083375146710009409 |
| 11 | 3733875752060633796100 |
| 12 | 434549943674384511794401 |
[4,1024,108900,12931216,1501795009,174892912804, 20353081850721,2368756732515625, 275676538509042724,32083375146710009409, 3733875752060633796100,434549943674384511794401] |