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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 108 |
| 4 | 27648 |
| 5 | 86400000 |
| 6 | 4031078400000 |
| 7 | 3319766398771200000 |
| 8 | 55696437941726556979200000 |
| 9 | 21577941222941856209168026828800000 |
| 10 | 215779412229418562091680268288000000000000000 |
| 11 | 61564384586635053951550731889313964883968000000000000000 |
[1,1,4,108,27648,86400000,4031078400000, 3319766398771200000,55696437941726556979200000, 21577941222941856209168026828800000, 215779412229418562091680268288000000000000000, 61564384586635053951550731889313964883968000000000\ 000000] |