n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 3 |
6 | 9 |
7 | 23 |
8 | 49 |
9 | 265 |
10 | 1763 |
11 | 11689 |
12 | 76179 |
13 | 790941 |
14 | 10968467 |
15 | 170749547 |
16 | 2982674505 |
17 | 69135368821 |
18 | 2071835100571 |
19 | 74394376040387 |
20 | 3179634632557555 |
[1,1,1,1,3,9,23,49,265,1763,11689,76179,790941, 10968467,170749547,2982674505,69135368821, 2071835100571,74394376040387,3179634632557555] |