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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 8 |
| 3 | 392 |
| 4 | 1831056 |
| 5 | 48217776 |
| 6 | 1217651376 |
| 7 | 30502319376 |
| 8 | 144640604656 |
| 9 | 762863159376 |
| 10 | 3774960835776 |
| 11 | 19073104859376 |
| 12 | 95168749491376 |
| 13 | 476835250859376 |
| 14 | 2383192380269376 |
| 15 | 11320075681132656 |
| 16 | 11920919418359376 |
[0,8,392,1831056,48217776,1217651376,30502319376, 144640604656,762863159376,3774960835776, 19073104859376,95168749491376,476835250859376, 2383192380269376,11320075681132656, 11920919418359376] |