n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 0 |
5 | 1 |
6 | 3 |
7 | 0 |
8 | 2 |
9 | 7 |
10 | 11 |
11 | 0 |
12 | 6 |
13 | 26 |
14 | 46 |
15 | 50 |
16 | 0 |
17 | 24 |
18 | 126 |
19 | 274 |
20 | 326 |
21 | 274 |
22 | 0 |
23 | 120 |
24 | 744 |
25 | 1956 |
26 | 2844 |
27 | 2556 |
28 | 1764 |
29 | 0 |
30 | 720 |
31 | 5160 |
32 | 16008 |
33 | 28092 |
34 | 30708 |
35 | 22212 |
36 | 13068 |
37 | 0 |
38 | 5040 |
39 | 41040 |
40 | 147120 |
41 | 304464 |
42 | 401136 |
43 | 351504 |
44 | 212976 |
45 | 109584 |
46 | 0 |
47 | 40320 |
[0,0,1,0,1,3,0,2,7,11,0,6,26,46,50,0,24,126,274, 326,274,0,120,744,1956,2844,2556,1764,0,720,5160, 16008,28092,30708,22212,13068,0,5040,41040,147120, 304464,401136,351504,212976,109584,0,40320] |