n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 2 |
6 | 0 |
7 | 5 |
8 | 10 |
9 | 12 |
10 | 0 |
11 | 23 |
12 | 46 |
13 | 66 |
14 | 72 |
15 | 0 |
16 | 119 |
17 | 238 |
18 | 354 |
19 | 456 |
20 | 480 |
21 | 0 |
22 | 719 |
23 | 1438 |
24 | 2154 |
25 | 2856 |
26 | 3480 |
27 | 3600 |
28 | 0 |
29 | 5039 |
30 | 10078 |
31 | 15114 |
32 | 20136 |
33 | 25080 |
34 | 29520 |
35 | 30240 |
36 | 0 |
37 | 40319 |
38 | 80638 |
39 | 120954 |
40 | 161256 |
41 | 201480 |
42 | 241200 |
43 | 277200 |
44 | 282240 |
45 | 0 |
46 | 362879 |
47 | 725758 |
48 | 1088634 |
49 | 1451496 |
50 | 1814280 |
51 | 2176560 |
52 | 2535120 |
53 | 2862720 |
54 | 2903040 |
55 | 0 |
[0,0,0,1,2,0,5,10,12,0,23,46,66,72,0,119,238,354, 456,480,0,719,1438,2154,2856,3480,3600,0,5039, 10078,15114,20136,25080,29520,30240,0,40319,80638, 120954,161256,201480,241200,277200,282240,0, 362879,725758,1088634,1451496,1814280,2176560, 2535120,2862720,2903040,0] |