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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 14 |
| 3 | 168 |
| 4 | 2212 |
| 5 | 29750 |
| 6 | 407946 |
| 7 | 5662636 |
| 8 | 79345982 |
| 9 | 1119873360 |
| 10 | 15897133212 |
| 11 | 226731289148 |
| 12 | 3246399497138 |
| 13 | 46636478912912 |
| 14 | 671855095655758 |
| 15 | 9702557118121642 |
| 16 | 140418234266554336 |
| 17 | 2035998107250999870 |
[1,14,168,2212,29750,407946,5662636,79345982, 1119873360,15897133212,226731289148,3246399497138, 46636478912912,671855095655758,9702557118121642, 140418234266554336,2035998107250999870] |