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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 3 |
| 5 | 10 |
| 6 | 21 |
| 7 | 5 |
| 8 | 22 |
| 9 | 73 |
| 10 | 192 |
| 11 | 7 |
| 12 | 44 |
| 13 | 190 |
| 14 | 703 |
| 15 | 2035 |
| 16 | 11 |
| 17 | 91 |
| 18 | 510 |
| 19 | 2287 |
| 20 | 8581 |
| 21 | 27407 |
| 22 | 15 |
| 23 | 172 |
| 24 | 1196 |
| 25 | 6738 |
| 26 | 30209 |
| 27 | 118461 |
[1,2,4,3,10,21,5,22,73,192,7,44,190,703,2035,11, 91,510,2287,8581,27407,15,172,1196,6738,30209, 118461] |