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A138090 as a simple table

n a(n)
1 1
2 0
3 2
4 -2
5 0
6 4
7 0
8 -10
9 0
10 12
11 8
12 0
13 -36
14 0
15 32
16 0
17 66
18 0
19 -140
20 0
21 80
22 -48
23 0
24 348
25 0
26 -512
27 0
28 208
29 0
30 -558
31 0
32 1708
33 0
34 -1728
35 0
36 544
37 384
38 0
39 -3900
40 0
41 7776
42 0
43 -5680
44 0
45 1408
46 0
47 5790
48 0
49 -23364
50 0
51 32496
52 0
53 -18304
54 0
55 3648
56 -3840
57 0
58 50580
59 0
60 -126720
61 0
62 128624
63 0
64 -57600
65 0
66 9472

[1,0,2,-2,0,4,0,-10,0,12,8,0,-36,0,32,0,66,0,-140,
 0,80,-48,0,348,0,-512,0,208,0,-558,0,1708,0,-1728,
 0,544,384,0,-3900,0,7776,0,-5680,0,1408,0,5790,0,
 -23364,0,32496,0,-18304,0,3648,-3840,0,50580,0,
 -126720,0,128624,0,-57600,0,9472]

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Last modified February 21 20:04 EST 2019. Contains 320377 sequences. (Running on oeis4.)