n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 8 |
5 | 18 |
6 | 40 |
7 | 77 |
8 | 180 |
9 | 378 |
10 | 822 |
11 | 1750 |
12 | 3824 |
13 | 8016 |
14 | 16630 |
15 | 36100 |
16 | 74092 |
17 | 154325 |
18 | 317388 |
19 | 657064 |
20 | 1348688 |
21 | 2732441 |
22 | 5554850 |
23 | 11203449 |
24 | 22725376 |
25 | 45309407 |
26 | 90568158 |
27 | 180428451 |
28 | 358348728 |
29 | 709098028 |
30 | 1395536060 |
[1,1,2,5,8,18,40,77,180,378,822,1750,3824,8016, 16630,36100,74092,154325,317388,657064,1348688, 2732441,5554850,11203449,22725376,45309407, 90568158,180428451,358348728,709098028,1395536060] |