n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 21 |
3 | 55 |
4 | 120 |
5 | 231 |
6 | 405 |
7 | 660 |
8 | 1014 |
9 | 1484 |
10 | 2085 |
11 | 2829 |
12 | 3724 |
13 | 4773 |
14 | 5973 |
15 | 7315 |
16 | 8784 |
17 | 10359 |
18 | 12013 |
19 | 13713 |
20 | 15420 |
21 | 17091 |
22 | 18681 |
23 | 20145 |
24 | 21440 |
25 | 22527 |
26 | 23373 |
27 | 23952 |
28 | 24246 |
29 | 24246 |
30 | 23952 |
31 | 23373 |
32 | 22527 |
33 | 21440 |
34 | 20145 |
35 | 18681 |
36 | 17091 |
37 | 15420 |
38 | 13713 |
[1,6,21,55,120,231,405,660,1014,1484,2085,2829, 3724,4773,5973,7315,8784,10359,12013,13713,15420, 17091,18681,20145,21440,22527,23373,23952,24246, 24246,23952,23373,22527,21440,20145,18681,17091, 15420,13713] |