n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 7 |
5 | 25 |
6 | 89 |
7 | 559 |
8 | 4332 |
9 | 47525 |
10 | 720844 |
11 | 13515353 |
12 | 345530332 |
13 | 11945906159 |
14 | 546900316419 |
15 | 33704239869671 |
16 | 2765958377374818 |
[1,1,1,7,25,89,559,4332,47525,720844,13515353, 345530332,11945906159,546900316419,33704239869671, 2765958377374818] |