n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 6 |
4 | 12 |
5 | 31 |
6 | 83 |
7 | 233 |
8 | 661 |
9 | 1893 |
10 | 5445 |
11 | 15720 |
12 | 45510 |
13 | 132069 |
14 | 384049 |
15 | 1118822 |
16 | 3264644 |
17 | 9539789 |
18 | 27913085 |
19 | 81769238 |
20 | 239794424 |
21 | 703906721 |
22 | 2068153901 |
23 | 6081507833 |
24 | 17896695833 |
25 | 52703944967 |
26 | 155310270103 |
27 | 457956633828 |
28 | 1351132539606 |
29 | 3988457429607 |
[1,3,6,12,31,83,233,661,1893,5445,15720,45510, 132069,384049,1118822,3264644,9539789,27913085, 81769238,239794424,703906721,2068153901, 6081507833,17896695833,52703944967,155310270103, 457956633828,1351132539606,3988457429607] |