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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 216 |
| 4 | 17576 |
| 5 | 2000376 |
| 6 | 245314376 |
| 7 | 30546884376 |
| 8 | 3815429734376 |
| 9 | 476855468984376 |
| 10 | 59605102540234376 |
| 11 | 7450592041021484376 |
| 12 | 931322860717802734376 |
| 13 | 116415328979492333984376 |
[0,1,216,17576,2000376,245314376,30546884376, 3815429734376,476855468984376,59605102540234376, 7450592041021484376,931322860717802734376, 116415328979492333984376] |