n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 9 |
4 | 32 |
5 | 135 |
6 | 709 |
7 | 4637 |
8 | 38374 |
9 | 391473 |
10 | 4764778 |
11 | 66913591 |
12 | 1056886475 |
13 | 18446472265 |
14 | 351482430368 |
15 | 7247888726269 |
16 | 160671989129665 |
17 | 3808499268504548 |
18 | 96094161981827499 |
19 | 2570930535917564366 |
20 | 72688753062897675445 |
[1,3,9,32,135,709,4637,38374,391473,4764778, 66913591,1056886475,18446472265,351482430368, 7247888726269,160671989129665,3808499268504548, 96094161981827499,2570930535917564366, 72688753062897675445] |