n | a(n) |
---|---|
-1 | 1 |
0 | -2 |
1 | 1 |
2 | -2 |
3 | 4 |
4 | -6 |
5 | 9 |
6 | -8 |
7 | 13 |
8 | -20 |
9 | 22 |
10 | -28 |
11 | 34 |
12 | -46 |
13 | 57 |
14 | -68 |
15 | 87 |
16 | -104 |
17 | 127 |
18 | -152 |
19 | 187 |
20 | -232 |
21 | 267 |
22 | -318 |
23 | 388 |
24 | -462 |
25 | 545 |
26 | -632 |
27 | 753 |
28 | -896 |
29 | 1043 |
30 | -1216 |
31 | 1416 |
32 | -1664 |
33 | 1928 |
34 | -2228 |
35 | 2597 |
36 | -2996 |
37 | 3454 |
38 | -3976 |
39 | 4585 |
40 | -5286 |
41 | 6031 |
42 | -6900 |
43 | 7918 |
44 | -9060 |
45 | 10325 |
46 | -11720 |
47 | 13372 |
48 | -15228 |
49 | 17259 |
50 | -19564 |
[1,-2,1,-2,4,-6,9,-8,13,-20,22,-28,34,-46,57,-68, 87,-104,127,-152,187,-232,267,-318,388,-462,545, -632,753,-896,1043,-1216,1416,-1664,1928,-2228, 2597,-2996,3454,-3976,4585,-5286,6031,-6900,7918, -9060,10325,-11720,13372,-15228,17259,-19564] |