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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 6 |
| 3 | 27 |
| 4 | 977 |
| 5 | 6434 |
| 6 | 146337 |
| 7 | 20390870 |
| 8 | 470828929 |
| 9 | 56179164262 |
[1,16,6,27,977,6434,146337,20390870,470828929, 56179164262] |