n | a(n) |
---|---|
3 | 5 |
4 | 16 |
5 | 68 |
6 | 392 |
7 | 2905 |
8 | 25508 |
9 | 251188 |
10 | 2703440 |
11 | 31462590 |
12 | 393962080 |
13 | 5289624824 |
14 | 75921813328 |
15 | 1161309733909 |
16 | 18873565250876 |
17 | 324948587103540 |
18 | 5910550393881120 |
19 | 113284096799562930 |
20 | 2282403914428653360 |
21 | 48231478277117432040 |
22 | 1066811449438992210000 |
[5,16,68,392,2905,25508,251188,2703440,31462590, 393962080,5289624824,75921813328,1161309733909, 18873565250876,324948587103540,5910550393881120, 113284096799562930,2282403914428653360, 48231478277117432040,1066811449438992210000] |