n | a(n) |
---|---|
3 | 1 |
4 | 2 |
5 | 5 |
6 | 14 |
7 | 36 |
8 | 98 |
9 | 273 |
10 | 768 |
11 | 2197 |
12 | 6360 |
13 | 18584 |
14 | 54780 |
15 | 162672 |
16 | 486154 |
17 | 1461197 |
18 | 4413988 |
19 | 13393855 |
20 | 40807290 |
21 | 124783669 |
22 | 382842018 |
23 | 1178140280 |
24 | 3635626680 |
25 | 11247841224 |
26 | 34880346840 |
27 | 108402132544 |
28 | 337576497920 |
29 | 1053229358252 |
30 | 3291813720292 |
[1,2,5,14,36,98,273,768,2197,6360,18584,54780, 162672,486154,1461197,4413988,13393855,40807290, 124783669,382842018,1178140280,3635626680, 11247841224,34880346840,108402132544,337576497920, 1053229358252,3291813720292] |