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A055978 as a simple table

n a(n)
4 1
5 -2
6 0
7 4
8 -24
9 36
10 0
11 -64
12 252
13 -290
14 0
15 396
16 -1472
17 1380
18 0
19 -944
20 4830
21 -4248
22 0
23 -1268
24 -6048
25 8040
26 0
27 12528
28 -16744
29 -3706
30 0
31 -20976
32 84480
33 -31284
34 0
35 -31312
36 -113643
37 101542
38 0
39 152892
40 -115920
41 -104792
42 0
43 -96576
44 534612
45 -112914
46 0
47 -369544
48 -370944
49 334864
50 0
51 603936
52 -577738
53 -22554
54 0

[1,-2,0,4,-24,36,0,-64,252,-290,0,396,-1472,1380,
 0,-944,4830,-4248,0,-1268,-6048,8040,0,12528,
 -16744,-3706,0,-20976,84480,-31284,0,-31312,
 -113643,101542,0,152892,-115920,-104792,0,-96576,
 534612,-112914,0,-369544,-370944,334864,0,603936,
 -577738,-22554,0]

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Last modified April 24 05:26 EDT 2024. Contains 371918 sequences. (Running on oeis4.)