n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 2 |
4 | 8 |
5 | 20 |
6 | 40 |
7 | 80 |
8 | 140 |
9 | 224 |
10 | 336 |
11 | 504 |
12 | 720 |
13 | 990 |
14 | 1320 |
15 | 1760 |
16 | 2288 |
17 | 2912 |
18 | 3640 |
19 | 4550 |
20 | 5600 |
21 | 6800 |
22 | 8160 |
23 | 9792 |
24 | 11628 |
25 | 13680 |
26 | 15960 |
27 | 18620 |
28 | 21560 |
29 | 24794 |
30 | 28336 |
31 | 32384 |
32 | 36800 |
33 | 41600 |
34 | 46800 |
35 | 52650 |
36 | 58968 |
37 | 65772 |
38 | 73080 |
39 | 81200 |
40 | 89900 |
[0,0,2,8,20,40,80,140,224,336,504,720,990,1320, 1760,2288,2912,3640,4550,5600,6800,8160,9792, 11628,13680,15960,18620,21560,24794,28336,32384, 36800,41600,46800,52650,58968,65772,73080,81200, 89900] |