n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 7 |
4 | 21 |
5 | 121 |
6 | 715 |
7 | 5041 |
8 | 40293 |
9 | 362887 |
10 | 3628681 |
11 | 39916801 |
12 | 479000895 |
13 | 6227020801 |
14 | 87178286161 |
15 | 1307674368127 |
16 | 20922789847653 |
17 | 355687428096001 |
18 | 6402373705365835 |
19 | 121645100408832001 |
20 | 2432902008173011101 |
21 | 51090942171709445047 |
22 | 1124000727777567763201 |
[1,1,7,21,121,715,5041,40293,362887,3628681, 39916801,479000895,6227020801,87178286161, 1307674368127,20922789847653,355687428096001, 6402373705365835,121645100408832001, 2432902008173011101,51090942171709445047, 1124000727777567763201] |