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| n | a(n) |
|---|---|
| 0 | 1073741824 |
| 1 | 2015993900449 |
| 2 | 141167095653376 |
| 3 | 2758547353515625 |
| 4 | 27197360938418176 |
| 5 | 174887470365513049 |
| 6 | 839299365868340224 |
| 7 | 3255243551009881201 |
| 8 | 10737418240000000000 |
| 9 | 31181719929966183601 |
[1073741824,2015993900449,141167095653376, 2758547353515625,27197360938418176, 174887470365513049,839299365868340224, 3255243551009881201,10737418240000000000, 31181719929966183601] |