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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 14 |
| 3 | 268 |
| 4 | 21462 |
| 5 | 7872396 |
| 6 | 12585797612 |
| 7 | 84949155244024 |
| 8 | 2379063526056509734 |
| 9 | 273414369715003663482380 |
| 10 | 128009001272184822673783879332 |
| 11 | 242979321424122460096958142064785384 |
[1,2,14,268,21462,7872396,12585797612, 84949155244024,2379063526056509734, 273414369715003663482380, 128009001272184822673783879332, 242979321424122460096958142064785384] |