n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 6 |
5 | 8 |
6 | 12 |
7 | 20 |
8 | 52 |
9 | 308 |
10 | 8500 |
11 | 2105652 |
12 | 17181974836 |
13 | 36028814200938804 |
14 | 618970019678718951650500916 |
15 | 22300745198530623760505737951367313156481332 |
[1,2,4,6,8,12,20,52,308,8500,2105652,17181974836, 36028814200938804,618970019678718951650500916, 22300745198530623760505737951367313156481332] |