n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 6 |
7 | 21 |
8 | 56 |
9 | 126 |
10 | 252 |
11 | 492 |
12 | 1062 |
13 | 2667 |
14 | 7252 |
15 | 19509 |
16 | 49824 |
17 | 121019 |
18 | 286974 |
19 | 687384 |
20 | 1702308 |
21 | 4357383 |
22 | 11322408 |
23 | 29307458 |
24 | 74897808 |
25 | 189349041 |
26 | 477491356 |
27 | 1211349276 |
28 | 3103673406 |
29 | 8017385416 |
30 | 20780391882 |
31 | 53812468392 |
32 | 138999941172 |
33 | 358502419242 |
[1,1,1,1,1,1,6,21,56,126,252,492,1062,2667,7252, 19509,49824,121019,286974,687384,1702308,4357383, 11322408,29307458,74897808,189349041,477491356, 1211349276,3103673406,8017385416,20780391882, 53812468392,138999941172,358502419242] |