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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 4 |
| 4 | 2200 |
| 5 | 1283875 |
| 6 | 1408620622 |
| 7 | 3595756291357 |
| 8 | 24101118080151321 |
| 9 | 459717083252930306823 |
| 10 | 26428405768066461371584216 |
| 11 | 4776623401553625413419662091924 |
[0,0,4,2200,1283875,1408620622,3595756291357, 24101118080151321,459717083252930306823, 26428405768066461371584216, 4776623401553625413419662091924] |