n | a(n) |
---|---|
1 | -2 |
2 | 1 |
3 | -7 |
4 | 23 |
5 | -121 |
6 | 719 |
7 | -5041 |
8 | 40319 |
9 | -362881 |
10 | 3628799 |
11 | -39916801 |
12 | 479001599 |
13 | -6227020801 |
14 | 87178291199 |
15 | -1307674368001 |
16 | 20922789887999 |
17 | -355687428096001 |
18 | 6402373705727999 |
19 | -121645100408832001 |
20 | 2432902008176639999 |
21 | -51090942171709440001 |
22 | 1124000727777607679999 |
[-2,1,-7,23,-121,719,-5041,40319,-362881,3628799, -39916801,479001599,-6227020801,87178291199, -1307674368001,20922789887999,-355687428096001, 6402373705727999,-121645100408832001, 2432902008176639999,-51090942171709440001, 1124000727777607679999] |