n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 5 |
4 | 25 |
5 | 129 |
6 | 713 |
7 | 4373 |
8 | 30289 |
9 | 235041 |
10 | 1998001 |
11 | 18226117 |
12 | 176364969 |
13 | 1803064033 |
14 | 19463340729 |
15 | 221691818005 |
16 | 2658751147297 |
17 | 33458500940993 |
18 | 440140082161121 |
19 | 6032572875160069 |
20 | 85936355674437561 |
21 | 1270176766188103105 |
22 | 19453176663852208937 |
[1,1,1,5,25,129,713,4373,30289,235041,1998001, 18226117,176364969,1803064033,19463340729, 221691818005,2658751147297,33458500940993, 440140082161121,6032572875160069, 85936355674437561,1270176766188103105, 19453176663852208937] |