n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 6 |
4 | 15 |
5 | 20 |
6 | 15 |
7 | 6 |
8 | 1 |
9 | 1 |
10 | 48 |
11 | 687 |
12 | 4850 |
13 | 20385 |
14 | 55908 |
15 | 104959 |
16 | 137886 |
17 | 127050 |
18 | 80640 |
19 | 33642 |
20 | 8316 |
21 | 924 |
22 | 1 |
23 | 342 |
24 | 21267 |
25 | 527876 |
26 | 7020525 |
27 | 58015362 |
28 | 324610399 |
29 | 1297791264 |
30 | 3839203452 |
31 | 8595153000 |
32 | 14760228672 |
33 | 19560928464 |
34 | 19987430694 |
[1,1,6,15,20,15,6,1,1,48,687,4850,20385,55908, 104959,137886,127050,80640,33642,8316,924,1,342, 21267,527876,7020525,58015362,324610399, 1297791264,3839203452,8595153000,14760228672, 19560928464,19987430694] |