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 | 1 |
14 | 0 |
15 | 3 |
16 | 5 |
17 | 15 |
18 | 19 |
19 | 57 |
20 | 72 |
21 | 275 |
22 | 499 |
23 | 1778 |
24 | 3705 |
25 | 11318 |
26 | 24525 |
27 | 65906 |
28 | 135599 |
29 | 333938 |
30 | 687969 |
31 | 1681759 |
32 | 3652677 |
[0,0,0,0,0,0,0,0,0,0,0,0,1,0,3,5,15,19,57,72,275, 499,1778,3705,11318,24525,65906,135599,333938, 687969,1681759,3652677] |