n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 3 |
5 | 33 |
6 | 155 |
7 | 1195 |
8 | 5418 |
9 | 72373 |
10 | 496027 |
11 | 6851051 |
12 | 59706592 |
13 | 986009607 |
14 | 10430165629 |
15 | 193892831665 |
16 | 2439695949632 |
17 | 50409517110169 |
18 | 737532991565959 |
19 | 16755308524034767 |
20 | 279581740874221016 |
[0,1,1,4,3,33,155,1195,5418,72373,496027,6851051, 59706592,986009607,10430165629,193892831665, 2439695949632,50409517110169,737532991565959, 16755308524034767,279581740874221016] |