n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 12 |
4 | 36 |
5 | 160 |
6 | 810 |
7 | 5376 |
8 | 41160 |
9 | 366336 |
10 | 3638250 |
11 | 39959040 |
12 | 479126340 |
13 | 6227619840 |
14 | 87180183090 |
15 | 1307684044800 |
16 | 20922822320400 |
17 | 355687603568640 |
18 | 6402374325997650 |
19 | 121645103938928640 |
20 | 2432902021271221500 |
21 | 51090942249743155200 |
22 | 1124000728080092512650 |
[1,2,4,12,36,160,810,5376,41160,366336,3638250, 39959040,479126340,6227619840,87180183090, 1307684044800,20922822320400,355687603568640, 6402374325997650,121645103938928640, 2432902021271221500,51090942249743155200, 1124000728080092512650] |