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| n | a(n) |
|---|---|
| 1 | 50 |
| 2 | 2740 |
| 3 | 320950 |
| 4 | 71431719 |
| 5 | 26192388204 |
| 6 | 14586457826568 |
| 7 | 11583623256480548 |
| 8 | 12514359896491286169 |
| 9 | 17723892558531981314400 |
[50,2740,320950,71431719,26192388204, 14586457826568,11583623256480548, 12514359896491286169,17723892558531981314400] |