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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 124 |
| 3 | 47700 |
| 4 | 225262148 |
| 5 | 13034933066892 |
| 6 | 9239962457023110368 |
| 7 | 80235179157233210417254036 |
| 8 | 8534774056580607728132307076396612 |
| 9 | 11121202754126311568095965858257048619933492 |
[4,124,47700,225262148,13034933066892, 9239962457023110368,80235179157233210417254036, 8534774056580607728132307076396612, 11121202754126311568095965858257048619933492] |