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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16777215 |
| 2 | 282412759265 |
| 3 | 281192547174175 |
| 4 | 59323169798679969 |
| 5 | 4678776693546226271 |
| 6 | 186842850042244797505 |
| 7 | 4530785251489078799295 |
| 8 | 75044076594002864649665 |
| 9 | 920233556923127490136639 |
| 10 | 8849732675807611094711841 |
| 11 | 69647114527583233038729695 |
| 12 | 463303923170979668638153825 |
[1,16777215,282412759265,281192547174175, 59323169798679969,4678776693546226271, 186842850042244797505,4530785251489078799295, 75044076594002864649665,920233556923127490136639, 8849732675807611094711841, 69647114527583233038729695, 463303923170979668638153825] |