n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 5 |
7 | 15 |
8 | 35 |
9 | 65 |
10 | 121 |
11 | 185 |
12 | 305 |
13 | 420 |
14 | 640 |
15 | 826 |
16 | 1190 |
17 | 1470 |
18 | 2030 |
19 | 2430 |
20 | 3246 |
21 | 3795 |
22 | 4935 |
23 | 5665 |
24 | 7205 |
25 | 8151 |
26 | 10175 |
27 | 11375 |
28 | 13975 |
29 | 15470 |
30 | 18746 |
31 | 20580 |
32 | 24640 |
33 | 26860 |
34 | 31820 |
35 | 34476 |
36 | 40460 |
37 | 43605 |
38 | 50745 |
39 | 54435 |
40 | 62871 |
41 | 67165 |
[0,0,0,0,0,1,5,15,35,65,121,185,305,420,640,826, 1190,1470,2030,2430,3246,3795,4935,5665,7205,8151, 10175,11375,13975,15470,18746,20580,24640,26860, 31820,34476,40460,43605,50745,54435,62871,67165] |