n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 9 |
4 | 20 |
5 | 26 |
6 | 96 |
7 | -210 |
8 | 2472 |
9 | -20961 |
10 | 211612 |
11 | -2324729 |
12 | 27901116 |
13 | -362708320 |
14 | 5077925048 |
15 | -76168864092 |
16 | 1218701840976 |
17 | -20717931276243 |
18 | 372922762998708 |
19 | -7085532496941803 |
20 | 141710649938878564 |
21 | -2975923648716396714 |
22 | 65470320271760793488 |
[0,1,4,9,20,26,96,-210,2472,-20961,211612, -2324729,27901116,-362708320,5077925048, -76168864092,1218701840976,-20717931276243, 372922762998708,-7085532496941803, 141710649938878564,-2975923648716396714, 65470320271760793488] |