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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 283 |
| 3 | 50037 |
| 4 | 17650540 |
| 5 | 10405067904 |
| 6 | 9211817140115 |
| 7 | 11424093748466841 |
| 8 | 18896062057822100616 |
| 9 | 40192544399240309019728 |
| 10 | 106876212200059543898143707 |
| 11 | 347377340594805599176614321101 |
[4,283,50037,17650540,10405067904,9211817140115, 11424093748466841,18896062057822100616, 40192544399240309019728, 106876212200059543898143707, 347377340594805599176614321101] |