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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 14 |
| 3 | 87 |
| 4 | 204 |
| 5 | 215 |
| 6 | 2771 |
| 7 | 3514 |
| 8 | 4224 |
| 9 | 4933 |
| 10 | 63269 |
| 11 | 219430 |
| 12 | 335247600 |
| 13 | 1861405559 |
[1,14,87,204,215,2771,3514,4224,4933,63269,219430, 335247600,1861405559] |