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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 16 |
| 3 | 108 |
| 4 | 729 |
| 5 | 12500 |
| 6 | 84375 |
| 7 | 3294172 |
| 8 | 9765625 |
| 9 | 22235661 |
| 10 | 2573571875 |
| 11 | 678223072849 |
| 12 | 1141246682444 |
| 13 | 7703415106497 |
| 14 | 891598970659375 |
| 15 | 1211500426369012 |
| 16 | 8177627877990831 |
| 17 | 234966429149994773 |
| 18 | 946484708100790625 |
[0,16,108,729,12500,84375,3294172,9765625, 22235661,2573571875,678223072849,1141246682444, 7703415106497,891598970659375,1211500426369012, 8177627877990831,234966429149994773, 946484708100790625] |