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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 298 |
| 4 | 18949 |
| 5 | 3962150 |
| 6 | 1916564344 |
| 7 | 2501114025582 |
| 8 | 8336852053702202 |
| 9 | 73027618049882652700 |
| 10 | 1666798946804859125492899 |
| 11 | 99738726494828465657124210156 |
| 12 | 15634873312495144092899303952245929 |
| 13 | 6430416165010536428917103922818349814504 |
[1,2,5,298,18949,3962150,1916564344,2501114025582, 8336852053702202,73027618049882652700, 1666798946804859125492899, 99738726494828465657124210156, 15634873312495144092899303952245929, 6430416165010536428917103922818349814504] |