n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -3 |
3 | -3 |
4 | 7 |
5 | 7 |
6 | -13 |
7 | -13 |
8 | 22 |
9 | 22 |
10 | -34 |
11 | -34 |
12 | 50 |
13 | 50 |
14 | -70 |
15 | -70 |
16 | 95 |
17 | 95 |
18 | -125 |
19 | -125 |
20 | 161 |
21 | 161 |
22 | -203 |
23 | -203 |
24 | 252 |
25 | 252 |
26 | -308 |
27 | -308 |
28 | 372 |
29 | 372 |
30 | -444 |
31 | -444 |
32 | 525 |
33 | 525 |
34 | -615 |
35 | -615 |
36 | 715 |
37 | 715 |
38 | -825 |
39 | -825 |
40 | 946 |
41 | 946 |
42 | -1078 |
43 | -1078 |
44 | 1222 |
45 | 1222 |
46 | -1378 |
47 | -1378 |
48 | 1547 |
49 | 1547 |
50 | -1729 |
51 | -1729 |
52 | 1925 |
53 | 1925 |
54 | -2135 |
55 | -2135 |
[1,1,-3,-3,7,7,-13,-13,22,22,-34,-34,50,50,-70, -70,95,95,-125,-125,161,161,-203,-203,252,252, -308,-308,372,372,-444,-444,525,525,-615,-615,715, 715,-825,-825,946,946,-1078,-1078,1222,1222,-1378, -1378,1547,1547,-1729,-1729,1925,1925,-2135,-2135] |