n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 20 |
3 | -1024 |
4 | -147568 |
5 | -19148736 |
6 | -2934842560 |
7 | -551525234688 |
8 | -127249126657792 |
9 | -35789287036394496 |
10 | -12158191126869847040 |
11 | -4941201795126314303488 |
12 | -2379230211581147229286400 |
[1,4,20,-1024,-147568,-19148736,-2934842560, -551525234688,-127249126657792,-35789287036394496, -12158191126869847040,-4941201795126314303488, -2379230211581147229286400] |