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A118687 as a simple table

n a(n)
0 1
1 1
2 -1
3 1
4 -2
5 1
6 1
7 -3
8 3
9 -1
10 1
11 -4
12 6
13 -4
14 1
15 1
16 -8
17 22
18 -28
19 17
20 -4
21 1
22 -12
23 54
24 -116
25 129
26 -72
27 16
28 1
29 -36
30 342
31 -1412
32 2913
33 -3168
34 1744
35 -384
36 1
37 -60
38 1206
39 -9620
40 36801
41 -73080
42 77776
43 -42240
44 9216
45 1
46 -252
47 12726
48 -241172
49 1883841
50 -7138872
51 14109136
52 -14975232
53 8119296
54 -1769472
55 1
56 -1980
57 448182

[1,1,-1,1,-2,1,1,-3,3,-1,1,-4,6,-4,1,1,-8,22,-28,
 17,-4,1,-12,54,-116,129,-72,16,1,-36,342,-1412,
 2913,-3168,1744,-384,1,-60,1206,-9620,36801,
 -73080,77776,-42240,9216,1,-252,12726,-241172,
 1883841,-7138872,14109136,-14975232,8119296,
 -1769472,1,-1980,448182]

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Last modified May 20 12:33 EDT 2019. Contains 323422 sequences. (Running on oeis4.)