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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 108 |
| 3 | 3200000 |
| 4 | 1158107343750000 |
| 5 | 119025168578031262646195453952 |
| 6 | 82864944710388642300699757862681018776776867840000 |
| 7 | 9481019710293786574190900386319772308050021208649248212215823364196925440000000 |
[1,2,108,3200000,1158107343750000, 119025168578031262646195453952, 82864944710388642300699757862681018776776867840000\ , 94810197102937865741909003863197723080500212086492\ 48212215823364196925440000000] |