n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 28 |
4 | 104 |
5 | 384 |
6 | 1428 |
7 | 5316 |
8 | 19820 |
9 | 73948 |
10 | 276044 |
11 | 1030796 |
12 | 3850048 |
13 | 14382248 |
14 | 53732172 |
15 | 200759004 |
16 | 750134520 |
17 | 2802980640 |
18 | 10474015164 |
19 | 39139487292 |
20 | 146259311592 |
21 | 546558514368 |
22 | 2042458815324 |
23 | 7632600834924 |
24 | 28522903136796 |
[1,2,8,28,104,384,1428,5316,19820,73948,276044, 1030796,3850048,14382248,53732172,200759004, 750134520,2802980640,10474015164,39139487292, 146259311592,546558514368,2042458815324, 7632600834924,28522903136796] |