n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 30 |
8 | 120 |
9 | 294 |
10 | 552 |
11 | 894 |
12 | 1320 |
13 | 1830 |
14 | 2424 |
15 | 3102 |
16 | 3864 |
17 | 4710 |
18 | 5640 |
19 | 6654 |
20 | 7752 |
21 | 8934 |
22 | 10200 |
23 | 11550 |
24 | 12984 |
25 | 14502 |
26 | 16104 |
27 | 17790 |
28 | 19560 |
29 | 21414 |
30 | 23352 |
31 | 25374 |
32 | 27480 |
33 | 29670 |
34 | 31944 |
35 | 34302 |
36 | 36744 |
37 | 39270 |
38 | 41880 |
39 | 44574 |
40 | 47352 |
41 | 50214 |
42 | 53160 |
43 | 56190 |
44 | 59304 |
45 | 62502 |
[0,0,0,0,0,0,30,120,294,552,894,1320,1830,2424, 3102,3864,4710,5640,6654,7752,8934,10200,11550, 12984,14502,16104,17790,19560,21414,23352,25374, 27480,29670,31944,34302,36744,39270,41880,44574, 47352,50214,53160,56190,59304,62502] |