n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 3 |
6 | 13 |
7 | 35 |
8 | 153 |
9 | 683 |
10 | 3961 |
11 | 40313 |
12 | 425869 |
13 | 5201531 |
14 | 83958899 |
15 | 1605656621 |
16 | 40845335121 |
17 | 1341029021439 |
18 | 52952035760711 |
19 | 2606494713905651 |
20 | 160683571908609159 |
[1,1,1,1,3,13,35,153,683,3961,40313,425869, 5201531,83958899,1605656621,40845335121, 1341029021439,52952035760711,2606494713905651, 160683571908609159] |