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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 128 |
| 3 | 279936 |
| 4 | 4586471424 |
| 5 | 358318080000000 |
| 6 | 100306130042880000000 |
| 7 | 82606411253903523840000000 |
| 8 | 173238200573946282828103680000000 |
| 9 | 828592942960967278432052230225920000000 |
| 10 | 8285929429609672784320522302259200000000000000 |
| 11 | 161469323688736156802100136913438716723200000000000000 |
[1,1,128,279936,4586471424,358318080000000, 100306130042880000000,82606411253903523840000000, 173238200573946282828103680000000, 828592942960967278432052230225920000000, 8285929429609672784320522302259200000000000000, 16146932368873615680210013691343871672320000000000\ 0000] |