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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 268435456 |
| 3 | 22876792454961 |
| 4 | 72057594037927936 |
| 5 | 37252902984619140625 |
| 6 | 6140942214464815497216 |
| 7 | 459986536544739960976801 |
| 8 | 19342813113834066795298816 |
| 9 | 523347633027360537213511521 |
[0,1,268435456,22876792454961,72057594037927936, 37252902984619140625,6140942214464815497216, 459986536544739960976801, 19342813113834066795298816, 523347633027360537213511521] |