n | a(n) |
---|---|
1 | -1 |
2 | 3 |
3 | -6 |
4 | 10 |
5 | -15 |
6 | 21 |
7 | -28 |
8 | 36 |
9 | -45 |
10 | 55 |
11 | -66 |
12 | 78 |
13 | -91 |
14 | 105 |
15 | -120 |
16 | 136 |
17 | -153 |
18 | 171 |
19 | -190 |
20 | 210 |
21 | -231 |
22 | 253 |
23 | -276 |
24 | 300 |
25 | -325 |
26 | 351 |
27 | -378 |
28 | 406 |
29 | -435 |
30 | 465 |
31 | -496 |
32 | 528 |
33 | -561 |
34 | 595 |
35 | -630 |
36 | 666 |
37 | -703 |
38 | 741 |
39 | -780 |
40 | 820 |
41 | -861 |
42 | 903 |
43 | -946 |
44 | 990 |
45 | -1035 |
46 | 1081 |
47 | -1128 |
48 | 1176 |
49 | -1225 |
50 | 1275 |
[-1,3,-6,10,-15,21,-28,36,-45,55,-66,78,-91,105, -120,136,-153,171,-190,210,-231,253,-276,300,-325, 351,-378,406,-435,465,-496,528,-561,595,-630,666, -703,741,-780,820,-861,903,-946,990,-1035,1081, -1128,1176,-1225,1275] |