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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 144 |
| 3 | 207936 |
| 4 | 299843856 |
| 5 | 432374632704 |
| 6 | 623483920515600 |
| 7 | 899063381008862784 |
| 8 | 1296448771930859619216 |
| 9 | 1869478230060918562046976 |
| 10 | 2695786311299072635612120464 |
| 11 | 3887321991415032679634115662400 |
[0,144,207936,299843856,432374632704, 623483920515600,899063381008862784, 1296448771930859619216,1869478230060918562046976, 2695786311299072635612120464, 3887321991415032679634115662400] |