n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 14 |
5 | 47 |
6 | 201 |
7 | 1331 |
8 | 11644 |
9 | 101575 |
10 | 1079100 |
11 | 11958564 |
12 | 169047968 |
13 | 2375578880 |
14 | 39413148160 |
15 | 962468127744 |
16 | 18758145972224 |
[1,1,4,14,47,201,1331,11644,101575,1079100, 11958564,169047968,2375578880,39413148160, 962468127744,18758145972224] |