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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 168 |
| 2 | 14112 |
| 3 | 790328 |
| 4 | 33200832 |
| 5 | 1116022152 |
| 6 | 31270754144 |
| 7 | 751295258136 |
| 8 | 15800653486464 |
| 9 | 295529872503656 |
| 10 | 4977542380850592 |
| 11 | 76262444439584760 |
| 12 | 1071822174138228800 |
| 13 | 13915770164927528520 |
| 14 | 167907946699820252640 |
[1,168,14112,790328,33200832,1116022152, 31270754144,751295258136,15800653486464, 295529872503656,4977542380850592, 76262444439584760,1071822174138228800, 13915770164927528520,167907946699820252640] |