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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 3888 |
| 4 | 764411904 |
| 5 | 214990848000000000 |
| 6 | 224634374557469245440000000000 |
| 7 | 1880461634768804771224006806208512000000000000 |
| 8 | 240091793104790737576620139562796649430329798636339200000000000000 |
| 9 | 813675117804798213250391541747787241264315446434692481270971279693253181440000000000000000 |
[1,8,3888,764411904,214990848000000000, 224634374557469245440000000000, 1880461634768804771224006806208512000000000000, 24009179310479073757662013956279664943032979863633\ 9200000000000000, 81367511780479821325039154174778724126431544643469\ 2481270971279693253181440000000000000000] |