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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 1 |
| 4 | 3 |
| 5 | 9 |
| 6 | 3 |
| 7 | 11 |
| 8 | 37 |
| 9 | 52 |
| 10 | 12 |
| 11 | 112 |
| 12 | 224 |
| 13 | 434 |
| 14 | 383 |
| 15 | 68 |
| 16 | 4398 |
| 17 | 1984 |
| 18 | 3976 |
| 19 | 5568 |
| 20 | 3256 |
| 21 | 502 |
| 22 | 1181185 |
| 23 | 47622 |
| 24 | 44581 |
| 25 | 74851 |
| 26 | 74604 |
| 27 | 31881 |
| 28 | 4158 |
[1,2,1,3,9,3,11,37,52,12,112,224,434,383,68,4398, 1984,3976,5568,3256,502,1181185,47622,44581,74851, 74604,31881,4158] |