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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | -18 |
| 4 | 322 |
| 5 | 103682 |
| 6 | 10749957122 |
| 7 | 115561578124838522882 |
| 8 | 13354478338703157414450712387359637585922 |
| 9 | 178342091698891843163466683840822101223162205277179656650156983624835803932590082 |
[2,4,-18,322,103682,10749957122, 115561578124838522882, 13354478338703157414450712387359637585922, 17834209169889184316346668384082210122316220527717\ 9656650156983624835803932590082] |