n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 13 |
4 | 41 |
5 | 103 |
6 | 275 |
7 | 685 |
8 | 2525 |
9 | 5221 |
10 | 13897 |
11 | 32717 |
12 | 176145 |
13 | 321963 |
14 | 1390895 |
15 | 2223445 |
16 | 3845743 |
17 | 10539177 |
18 | 76756525 |
19 | 147653093 |
20 | 808935605 |
21 | 934179307 |
[1,5,13,41,103,275,685,2525,5221,13897,32717, 176145,321963,1390895,2223445,3845743,10539177, 76756525,147653093,808935605,934179307] |