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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 5 |
| 3 | 187 |
| 4 | 1242 |
| 5 | 9682 |
| 6 | 86538 |
| 7 | 733339 |
| 8 | 5821735 |
| 9 | 56196114 |
| 10 | 503193257 |
| 11 | 4161915701 |
| 12 | 41621368333 |
| 13 | 383118399789 |
[1,6,5,187,1242,9682,86538,733339,5821735, 56196114,503193257,4161915701,41621368333, 383118399789] |