n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | -1 |
4 | 2 |
5 | -3 |
6 | 5 |
7 | -9 |
8 | 16 |
9 | -28 |
10 | 49 |
11 | -86 |
12 | 151 |
13 | -265 |
14 | 465 |
15 | -816 |
16 | 1432 |
17 | -2513 |
18 | 4410 |
19 | -7739 |
20 | 13581 |
21 | -23833 |
22 | 41824 |
23 | -73396 |
24 | 128801 |
25 | -226030 |
26 | 396655 |
27 | -696081 |
28 | 1221537 |
29 | -2143648 |
30 | 3761840 |
31 | -6601569 |
32 | 11584946 |
33 | -20330163 |
34 | 35676949 |
35 | -62608681 |
36 | 109870576 |
37 | -192809420 |
38 | 338356945 |
39 | -593775046 |
40 | 1042002567 |
[1,0,0,-1,2,-3,5,-9,16,-28,49,-86,151,-265,465, -816,1432,-2513,4410,-7739,13581,-23833,41824, -73396,128801,-226030,396655,-696081,1221537, -2143648,3761840,-6601569,11584946,-20330163, 35676949,-62608681,109870576,-192809420,338356945, -593775046,1042002567] |