n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 0 |
9 | 0 |
10 | 0 |
11 | 0 |
12 | 0 |
13 | 0 |
14 | 0 |
15 | 0 |
16 | 0 |
17 | 0 |
18 | 0 |
19 | 1 |
20 | 21 |
21 | 573 |
22 | 9140 |
23 | 105417 |
24 | 982767 |
25 | 7919375 |
26 | 57387444 |
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,21,573, 9140,105417,982767,7919375,57387444] |