n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 1 |
5 | 3 |
6 | 9 |
7 | 21 |
8 | 63 |
9 | 567 |
10 | 63 |
11 | 6237 |
12 | 18711 |
13 | 81081 |
14 | 1702701 |
15 | 464373 |
16 | 1702701 |
17 | 86837751 |
18 | 71049069 |
19 | 549972423 |
20 | 14849255421 |
21 | 23987258757 |
22 | 1143392667417 |
23 | 78894094051773 |
24 | 236682282155319 |
25 | 78894094051773 |
26 | 279715424365377 |
[1,1,1,3,1,3,9,21,63,567,63,6237,18711,81081, 1702701,464373,1702701,86837751,71049069, 549972423,14849255421,23987258757,1143392667417, 78894094051773,236682282155319,78894094051773, 279715424365377] |