n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 3 |
5 | 3 |
6 | 12 |
7 | 21 |
8 | 30 |
9 | 66 |
10 | 138 |
11 | 264 |
12 | 525 |
13 | 1029 |
14 | 2460 |
15 | 5079 |
16 | 10344 |
17 | 22197 |
18 | 50421 |
19 | 108966 |
20 | 229827 |
21 | 498432 |
22 | 1136190 |
23 | 2495118 |
24 | 5390319 |
25 | 11879355 |
26 | 27012990 |
27 | 60008826 |
28 | 131877372 |
29 | 292070991 |
30 | 670433502 |
31 | 1500384540 |
32 | 3327218859 |
33 | 7449719727 |
34 | 17089051899 |
[1,1,3,3,3,12,21,30,66,138,264,525,1029,2460,5079, 10344,22197,50421,108966,229827,498432,1136190, 2495118,5390319,11879355,27012990,60008826, 131877372,292070991,670433502,1500384540, 3327218859,7449719727,17089051899] |