n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 1 |
5 | 9 |
6 | 21 |
7 | 1 |
8 | 45 |
9 | 84 |
10 | 231 |
11 | 1 |
12 | 165 |
13 | 840 |
14 | 1155 |
15 | 3465 |
16 | 1 |
17 | 855 |
18 | 8610 |
19 | 13860 |
20 | 20790 |
21 | 65835 |
22 | 1 |
23 | 3843 |
24 | 64680 |
25 | 250635 |
26 | 291060 |
27 | 460845 |
28 | 1514205 |
29 | 1 |
30 | 21819 |
31 | 689136 |
32 | 3969735 |
33 | 6015240 |
34 | 7373520 |
35 | 12113640 |
36 | 40883535 |
37 | 1 |
38 | 114075 |
[1,1,3,1,9,21,1,45,84,231,1,165,840,1155,3465,1, 855,8610,13860,20790,65835,1,3843,64680,250635, 291060,460845,1514205,1,21819,689136,3969735, 6015240,7373520,12113640,40883535,1,114075] |