n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 1 |
4 | 3 |
5 | 11 |
6 | 54 |
7 | 455 |
8 | 6876 |
9 | 191534 |
10 | 9733044 |
11 | 903753247 |
12 | 154108311109 |
13 | 48542114686911 |
14 | 28401423719121848 |
15 | 31021002160355166835 |
16 | 63530415842308265093408 |
17 | 244912778438520759443245823 |
18 | 1783398846284777975419600095642 |
19 | 24605641171260376770598003978281471 |
[1,0,1,3,11,54,455,6876,191534,9733044,903753247, 154108311109,48542114686911,28401423719121848, 31021002160355166835,63530415842308265093408, 244912778438520759443245823, 1783398846284777975419600095642, 24605641171260376770598003978281471] |