n | a(n) |
---|---|
0 | 2 |
1 | 2 |
2 | 4 |
3 | 9 |
4 | 32 |
5 | 135 |
6 | 768 |
7 | 5145 |
8 | 40704 |
9 | 363825 |
10 | 3632640 |
11 | 39927195 |
12 | 479047680 |
13 | 6227155935 |
14 | 87178936320 |
15 | 1307676395025 |
16 | 20922800209920 |
17 | 355687462555425 |
18 | 6402373891522560 |
19 | 121645101063561075 |
20 | 2432902011892531200 |
21 | 51090942185458750575 |
22 | 1124000727859357286400 |
[2,2,4,9,32,135,768,5145,40704,363825,3632640, 39927195,479047680,6227155935,87178936320, 1307676395025,20922800209920,355687462555425, 6402373891522560,121645101063561075, 2432902011892531200,51090942185458750575, 1124000727859357286400] |