n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 0 |
4 | 0 |
5 | 3 |
6 | 3 |
7 | 0 |
8 | 1 |
9 | 63 |
10 | 662 |
11 | 2400 |
12 | 3900 |
13 | 2940 |
14 | 840 |
15 | 0 |
16 | 94 |
17 | 97692 |
18 | 10308758 |
19 | 337560150 |
20 | 5098740090 |
21 | 42976836210 |
22 | 224685801060 |
23 | 775389028050 |
24 | 1830791421900 |
25 | 3007909258200 |
26 | 3439214024400 |
27 | 2685727044000 |
28 | 1366701336000 |
29 | 408648240000 |
30 | 54486432000 |
[0,1,0,0,3,3,0,1,63,662,2400,3900,2940,840,0,94, 97692,10308758,337560150,5098740090,42976836210, 224685801060,775389028050,1830791421900, 3007909258200,3439214024400,2685727044000, 1366701336000,408648240000,54486432000] |