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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 3 |
| 5 | 18 |
| 6 | 7 |
| 7 | 11 |
| 8 | 76 |
| 9 | 322 |
| 10 | 29 |
| 11 | 1364 |
| 12 | 123 |
| 13 | 47 |
| 14 | 199 |
| 15 | 24476 |
| 16 | 843 |
| 17 | 5778 |
| 18 | 521 |
[1,2,4,3,18,7,11,76,322,29,1364,123,47,199,24476, 843,5778,521] |