n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 125 |
5 | 722 |
6 | 2565 |
7 | 7180 |
8 | 17335 |
9 | 37750 |
10 | 76093 |
11 | 144340 |
12 | 260590 |
13 | 451440 |
14 | 755040 |
15 | 1224964 |
16 | 1935050 |
17 | 2985380 |
18 | 4509590 |
19 | 6683720 |
20 | 9736835 |
21 | 13963670 |
22 | 19739575 |
23 | 27538060 |
24 | 37951265 |
25 | 51713706 |
26 | 69729675 |
27 | 93104700 |
28 | 123181500 |
[0,0,0,0,125,722,2565,7180,17335,37750,76093, 144340,260590,451440,755040,1224964,1935050, 2985380,4509590,6683720,9736835,13963670,19739575, 27538060,37951265,51713706,69729675,93104700, 123181500] |