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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 10 |
| 5 | 30 |
| 6 | 1001 |
| 7 | 12597 |
| 8 | 928625 |
| 9 | 6823410 |
| 10 | 5726524817 |
| 11 | 535559230045 |
| 12 | 1663956345331035 |
| 13 | 31585642122981563519 |
| 14 | 41509264833598969449 |
| 15 | 42166476181036367886321070896 |
| 16 | 32188781618651044104151245462 |
[1,3,6,10,30,1001,12597,928625,6823410,5726524817, 535559230045,1663956345331035, 31585642122981563519,41509264833598969449, 42166476181036367886321070896, 32188781618651044104151245462] |