n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 10 |
3 | 32 |
4 | 120 |
5 | 342 |
6 | 1206 |
7 | 3320 |
8 | 10604 |
9 | 29578 |
10 | 88342 |
11 | 239400 |
12 | 702020 |
13 | 1863654 |
14 | 5262650 |
15 | 13948824 |
16 | 38427192 |
17 | 100244162 |
18 | 272822282 |
19 | 703972024 |
20 | 1883948848 |
21 | 4839944150 |
22 | 12779850278 |
23 | 32548367784 |
24 | 85335644100 |
25 | 215826029018 |
26 | 560407835934 |
27 | 1412632075328 |
[1,2,10,32,120,342,1206,3320,10604,29578,88342, 239400,702020,1863654,5262650,13948824,38427192, 100244162,272822282,703972024,1883948848, 4839944150,12779850278,32548367784,85335644100, 215826029018,560407835934,1412632075328] |