n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 6 |
5 | 29 |
6 | 162 |
7 | 1055 |
8 | 7918 |
9 | 67303 |
10 | 639383 |
11 | 6713530 |
12 | 77205601 |
13 | 965070017 |
14 | 13028445231 |
15 | 188912455860 |
16 | 2928143065834 |
17 | 48314360586264 |
18 | 845501310259627 |
19 | 15641774239803107 |
20 | 305014597676160593 |
21 | 6252799252361292173 |
[1,0,0,1,6,29,162,1055,7918,67303,639383,6713530, 77205601,965070017,13028445231,188912455860, 2928143065834,48314360586264,845501310259627, 15641774239803107,305014597676160593, 6252799252361292173] |