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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 64 |
| 3 | 82944 |
| 4 | 8153726976 |
| 5 | 97844723712000000 |
| 6 | 210357201231685877760000000 |
| 7 | 111759427954264225978066246041600000000 |
| 8 | 19353724511515955943723861007628909886308352000000000 |
| 9 | 1393093075882582456065167957036969287436705021776979747143680000000000 |
| 10 | 51765823014530203817669442380756522498563227474168874049894256476160000000000000000000000 |
[1,2,64,82944,8153726976,97844723712000000, 210357201231685877760000000, 111759427954264225978066246041600000000, 19353724511515955943723861007628909886308352000000\ 000, 13930930758825824560651679570369692874367050217769\ 79747143680000000000, 51765823014530203817669442380756522498563227474168\ 874049894256476160000000000000000000000] |