n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 13 |
7 | 21 |
8 | 57 |
9 | 259 |
10 | 1017 |
11 | 4255 |
12 | 25913 |
13 | 160493 |
14 | 1488777 |
15 | 11698881 |
16 | 154711435 |
17 | 1737788683 |
18 | 30091739925 |
[1,1,1,1,1,13,21,57,259,1017,4255,25913,160493, 1488777,11698881,154711435,1737788683,30091739925] |