n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | -1 |
4 | 6 |
5 | -3 |
6 | 8 |
7 | -5 |
8 | 10 |
9 | -7 |
10 | 12 |
11 | -9 |
12 | 14 |
13 | -11 |
14 | 16 |
15 | -13 |
16 | 18 |
17 | -15 |
18 | 20 |
19 | -17 |
20 | 22 |
21 | -19 |
22 | 24 |
23 | -21 |
24 | 26 |
25 | -23 |
26 | 28 |
27 | -25 |
28 | 30 |
29 | -27 |
30 | 32 |
31 | -29 |
32 | 34 |
33 | -31 |
34 | 36 |
35 | -33 |
36 | 38 |
37 | -35 |
38 | 40 |
39 | -37 |
40 | 42 |
41 | -39 |
42 | 44 |
43 | -41 |
44 | 46 |
45 | -43 |
46 | 48 |
47 | -45 |
48 | 50 |
49 | -47 |
50 | 52 |
51 | -49 |
[1,4,-1,6,-3,8,-5,10,-7,12,-9,14,-11,16,-13,18, -15,20,-17,22,-19,24,-21,26,-23,28,-25,30,-27,32, -29,34,-31,36,-33,38,-35,40,-37,42,-39,44,-41,46, -43,48,-45,50,-47,52,-49] |