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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 6 |
| 6 | 10 |
| 7 | 17 |
| 8 | 43 |
| 9 | 70 |
| 10 | 1077 |
| 11 | 6635 |
| 12 | 12369 |
| 13 | 43578 |
| 14 | 105102700 |
[1,2,3,5,6,10,17,43,70,1077,6635,12369,43578, 105102700] |