n | a(n) |
---|---|
4 | 4 |
5 | 16 |
6 | 91 |
7 | 631 |
8 | 5041 |
9 | 45361 |
10 | 453601 |
11 | 4989601 |
12 | 59875201 |
13 | 778377601 |
14 | 10897286401 |
15 | 163459296001 |
16 | 2615348736001 |
17 | 44460928512001 |
18 | 800296713216001 |
19 | 15205637551104001 |
20 | 304112751022080001 |
21 | 6386367771463680001 |
[4,16,91,631,5041,45361,453601,4989601,59875201, 778377601,10897286401,163459296001,2615348736001, 44460928512001,800296713216001,15205637551104001, 304112751022080001,6386367771463680001] |