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| n | a(n) |
|---|---|
| 1 | 144 |
| 2 | 5232 |
| 3 | 364512 |
| 4 | 64384744 |
| 5 | 27145405344 |
| 6 | 30477019485544 |
| 7 | 83444652183591008 |
[144,5232,364512,64384744,27145405344, 30477019485544,83444652183591008] |