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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1732 |
| 3 | 220970 |
| 4 | 66622532 |
| 5 | 20816992724 |
| 6 | 6479894318198 |
| 7 | 2012129115093308 |
| 8 | 626306050264214612 |
| 9 | 194986475188899358816 |
| 10 | 60695893045948486447450 |
| 11 | 18894590354461901315111820 |
| 12 | 5881924926873718865927435500 |
[0,1732,220970,66622532,20816992724,6479894318198, 2012129115093308,626306050264214612, 194986475188899358816,60695893045948486447450, 18894590354461901315111820, 5881924926873718865927435500] |