n | a(n) |
---|---|
0 | 5 |
1 | 0 |
2 | 10 |
3 | -10 |
4 | 30 |
5 | -50 |
6 | 110 |
7 | -210 |
8 | 430 |
9 | -850 |
10 | 1710 |
11 | -3410 |
12 | 6830 |
13 | -13650 |
14 | 27310 |
15 | -54610 |
16 | 109230 |
17 | -218450 |
18 | 436910 |
19 | -873810 |
20 | 1747630 |
21 | -3495250 |
22 | 6990510 |
23 | -13981010 |
24 | 27962030 |
25 | -55924050 |
26 | 111848110 |
27 | -223696210 |
28 | 447392430 |
29 | -894784850 |
30 | 1789569710 |
31 | -3579139410 |
[5,0,10,-10,30,-50,110,-210,430,-850,1710,-3410, 6830,-13650,27310,-54610,109230,-218450,436910, -873810,1747630,-3495250,6990510,-13981010, 27962030,-55924050,111848110,-223696210,447392430, -894784850,1789569710,-3579139410] |