n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 14 |
4 | 40 |
5 | 248 |
6 | 976 |
7 | 4928 |
8 | 21568 |
9 | 102272 |
10 | 463360 |
11 | 2153984 |
12 | 9868288 |
13 | 45584384 |
14 | 209588224 |
15 | 966189056 |
16 | 4447436800 |
17 | 20489142272 |
18 | 94347526144 |
19 | 434564759552 |
20 | 2001299832832 |
21 | 9217376780288 |
22 | 42450351554560 |
23 | 195509224472576 |
[1,1,14,40,248,976,4928,21568,102272,463360, 2153984,9868288,45584384,209588224,966189056, 4447436800,20489142272,94347526144,434564759552, 2001299832832,9217376780288,42450351554560, 195509224472576] |