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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 8 |
| 3 | 486 |
| 4 | 49152 |
| 5 | 7812500 |
| 6 | 1813985280 |
| 7 | 581334062442 |
| 8 | 246290604621824 |
| 9 | 133417453597332552 |
| 10 | 90000000000000000000 |
| 11 | 74002499442581601012110 |
| 12 | 72872109936441607122321408 |
| 13 | 84676920178401799992368876316 |
| 14 | 114656931713301654695784797437952 |
| 15 | 178967655284025147557258605957031250 |
[0,8,486,49152,7812500,1813985280,581334062442, 246290604621824,133417453597332552, 90000000000000000000,74002499442581601012110, 72872109936441607122321408, 84676920178401799992368876316, 114656931713301654695784797437952, 178967655284025147557258605957031250] |