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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 3 |
| 7 | 2 |
| 8 | 3 |
| 9 | 2 |
| 10 | 5 |
| 11 | 3 |
| 12 | 7 |
| 13 | 4 |
| 14 | 15 |
| 15 | 6 |
| 16 | 57 |
| 17 | 8 |
| 18 | 466 |
| 19 | 12 |
| 20 | 5801 |
| 21 | 24 |
| 22 | 91091 |
| 23 | 3939 |
| 24 | 1744378 |
| 25 | 4132022 |
| 26 | 163639295 |
| 27 | 4018022192 |
| 28 | 119026596500 |
[1,1,2,1,2,2,3,2,3,2,5,3,7,4,15,6,57,8,466,12, 5801,24,91091,3939,1744378,4132022,163639295, 4018022192,119026596500] |