n | a(n) |
---|---|
1 | 1 |
2 | 15 |
3 | 767 |
4 | 93621 |
5 | 22431655 |
6 | 9362799454 |
7 | 6260161965339 |
8 | 6298506200484865 |
9 | 9087853319185940117 |
10 | 18101094912700638755191 |
[1,15,767,93621,22431655,9362799454,6260161965339, 6298506200484865,9087853319185940117, 18101094912700638755191] |