n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 24 |
4 | 104 |
5 | 320 |
6 | 648 |
7 | 1540 |
8 | 2832 |
9 | 3996 |
10 | 7860 |
11 | 12100 |
12 | 15552 |
13 | 25376 |
14 | 35084 |
15 | 36840 |
16 | 62752 |
17 | 81600 |
18 | 97272 |
19 | 131556 |
20 | 163720 |
21 | 178332 |
22 | 245564 |
23 | 296516 |
24 | 336960 |
25 | 421600 |
26 | 497172 |
27 | 557280 |
28 | 678552 |
29 | 786016 |
30 | 836520 |
31 | 1038500 |
32 | 1185344 |
33 | 1301124 |
34 | 1525444 |
35 | 1720740 |
36 | 1893600 |
37 | 2166720 |
38 | 2419612 |
39 | 2628600 |
40 | 2991440 |
[0,4,24,104,320,648,1540,2832,3996,7860,12100, 15552,25376,35084,36840,62752,81600,97272,131556, 163720,178332,245564,296516,336960,421600,497172, 557280,678552,786016,836520,1038500,1185344, 1301124,1525444,1720740,1893600,2166720,2419612, 2628600,2991440] |