n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 2 |
6 | 4 |
7 | 6 |
8 | 10 |
9 | 16 |
10 | 30 |
11 | 54 |
12 | 84 |
13 | 140 |
14 | 252 |
15 | 420 |
16 | 756 |
17 | 1260 |
18 | 2520 |
19 | 4620 |
20 | 7920 |
21 | 13860 |
22 | 27720 |
23 | 51480 |
24 | 90120 |
25 | 180180 |
26 | 337890 |
27 | 600600 |
28 | 1081080 |
29 | 2042040 |
30 | 3675672 |
31 | 6348888 |
32 | 12252240 |
33 | 23279256 |
34 | 42325920 |
35 | 77597520 |
36 | 148140720 |
37 | 271591320 |
38 | 480507720 |
39 | 892371480 |
[1,1,1,2,2,4,6,10,16,30,54,84,140,252,420,756, 1260,2520,4620,7920,13860,27720,51480,90120, 180180,337890,600600,1081080,2042040,3675672, 6348888,12252240,23279256,42325920,77597520, 148140720,271591320,480507720,892371480] |