n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 32 |
3 | 168 |
4 | 800 |
5 | 3352 |
6 | 13616 |
7 | 55488 |
8 | 223012 |
9 | 889328 |
10 | 3559604 |
11 | 14258048 |
12 | 57030476 |
13 | 228151816 |
14 | 912765036 |
15 | 3650768940 |
[1,4,32,168,800,3352,13616,55488,223012,889328, 3559604,14258048,57030476,228151816,912765036, 3650768940] |