n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 1 |
9 | 0 |
10 | 2 |
11 | 2 |
12 | 12 |
13 | 31 |
14 | 220 |
15 | 1606 |
16 | 16828 |
17 | 193900 |
18 | 2452818 |
19 | 32670330 |
20 | 456028474 |
21 | 6636066099 |
22 | 100135577747 |
23 | 1582718912968 |
[1,0,0,0,0,0,0,0,1,0,2,2,12,31,220,1606,16828, 193900,2452818,32670330,456028474,6636066099, 100135577747,1582718912968] |