n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 9 |
5 | 25 |
6 | 61 |
7 | 265 |
8 | 2725 |
9 | 40501 |
10 | 485293 |
11 | 5980517 |
12 | 124941205 |
13 | 4561553811 |
14 | 214166188181 |
15 | 10710509884487 |
16 | 650335804942117 |
[1,1,1,9,25,61,265,2725,40501,485293,5980517, 124941205,4561553811,214166188181,10710509884487, 650335804942117] |