n | a(n) |
---|---|
0 | 4 |
1 | -1 |
2 | -1 |
3 | -1 |
4 | 7 |
5 | -6 |
6 | -1 |
7 | -1 |
8 | 15 |
9 | -19 |
10 | 4 |
11 | -1 |
12 | 31 |
13 | -53 |
14 | 27 |
15 | -6 |
16 | 63 |
17 | -137 |
18 | 107 |
19 | -39 |
20 | 132 |
21 | -337 |
22 | 351 |
23 | -185 |
24 | 303 |
25 | -806 |
26 | 1039 |
27 | -721 |
28 | 791 |
29 | -1915 |
30 | 2884 |
31 | -2481 |
32 | 2303 |
33 | -4621 |
34 | 7683 |
35 | -7846 |
36 | 7087 |
37 | -11545 |
38 | 19987 |
39 | -23375 |
40 | 22020 |
41 | -30177 |
42 | 51519 |
43 | -66737 |
44 | 67415 |
45 | -82374 |
46 | 133215 |
47 | -184993 |
48 | 201567 |
49 | -232163 |
50 | 348804 |
[4,-1,-1,-1,7,-6,-1,-1,15,-19,4,-1,31,-53,27,-6, 63,-137,107,-39,132,-337,351,-185,303,-806,1039, -721,791,-1915,2884,-2481,2303,-4621,7683,-7846, 7087,-11545,19987,-23375,22020,-30177,51519, -66737,67415,-82374,133215,-184993,201567,-232163, 348804] |