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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 39 |
| 7 | 56 |
| 8 | 85 |
| 9 | 557 |
| 10 | 911 |
| 11 | 2919 |
| 12 | 2921 |
| 13 | 4491 |
| 14 | 11543 |
| 15 | 15724 |
| 16 | 98040 |
| 17 | 110932 |
| 18 | 126659 |
[1,2,3,4,5,39,56,85,557,911,2919,2921,4491,11543, 15724,98040,110932,126659] |