n | a(n) |
---|---|
3 | 1 |
4 | 5 |
5 | 13 |
6 | 40 |
7 | 116 |
8 | 342 |
9 | 1002 |
10 | 2941 |
11 | 8629 |
12 | 25333 |
13 | 74405 |
14 | 218659 |
15 | 642955 |
16 | 1891683 |
17 | 5568867 |
18 | 16403283 |
19 | 48342867 |
20 | 142548639 |
21 | 420546039 |
22 | 1241293314 |
23 | 3665526270 |
24 | 10829045472 |
25 | 32005684340 |
26 | 94632148659 |
27 | 279909001851 |
28 | 828235716571 |
29 | 2451561077995 |
[1,5,13,40,116,342,1002,2941,8629,25333,74405, 218659,642955,1891683,5568867,16403283,48342867, 142548639,420546039,1241293314,3665526270, 10829045472,32005684340,94632148659,279909001851, 828235716571,2451561077995] |