n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 12 |
5 | 40 |
6 | 116 |
7 | 200 |
8 | 444 |
9 | 760 |
10 | 2160 |
11 | 4368 |
12 | 7852 |
13 | 12828 |
14 | 17252 |
15 | 19612 |
16 | 21104 |
17 | 19760 |
18 | 20392 |
19 | 20128 |
20 | 20636 |
21 | 22408 |
22 | 23988 |
[1,2,4,12,40,116,200,444,760,2160,4368,7852,12828, 17252,19612,21104,19760,20392,20128,20636,22408, 23988] |