n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 28 |
5 | 605 |
6 | 9366 |
7 | 116767 |
8 | 1310408 |
9 | 15812505 |
10 | 263924650 |
11 | 6018875291 |
12 | 148630870092 |
13 | 3548481410773 |
14 | 82543469312318 |
15 | 2000101425252855 |
16 | 54347539111582096 |
17 | 1678367049470539697 |
18 | 56020955060945897298 |
[1,1,2,3,28,605,9366,116767,1310408,15812505, 263924650,6018875291,148630870092,3548481410773, 82543469312318,2000101425252855,54347539111582096, 1678367049470539697,56020955060945897298] |