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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 16777215 |
| 3 | 141197991025 |
| 4 | 46771289738810 |
| 5 | 2436684974110751 |
| 6 | 37026417000002430 |
| 7 | 227832482998716310 |
| 8 | 690223721118368580 |
| 9 | 1167921451092973005 |
| 10 | 1203163392175387500 |
| 11 | 802355904438462660 |
[1,16777215,141197991025,46771289738810, 2436684974110751,37026417000002430, 227832482998716310,690223721118368580, 1167921451092973005,1203163392175387500, 802355904438462660] |