n | a(n) |
---|---|
4 | 2 |
5 | 9 |
6 | 48 |
7 | 231 |
8 | 1188 |
9 | 6114 |
10 | 32448 |
11 | 175032 |
12 | 962472 |
13 | 5370524 |
14 | 30377504 |
15 | 173816313 |
16 | 1004823816 |
17 | 5861490300 |
18 | 34468767840 |
19 | 204161269620 |
20 | 1217143807770 |
21 | 7299003615537 |
22 | 44005594027200 |
23 | 266608363362900 |
[2,9,48,231,1188,6114,32448,175032,962472,5370524, 30377504,173816313,1004823816,5861490300, 34468767840,204161269620,1217143807770, 7299003615537,44005594027200,266608363362900] |