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A173814 as a simple table

n a(n)
0 1
1 1
2 -4
3 1
4 1
5 -16
6 30
7 -16
8 1
9 1
10 -64
11 676
12 -2752
13 4678
14 -2752
15 676
16 -64
17 1
18 1
19 -256
20 13560
21 -316160
22 3830300
23 -25002240
24 87841480
25 -180202240
26 227671110
27 -180202240
28 87841480
29 -25002240
30 3830300
31 -316160
32 13560
33 -256
34 1
35 1
36 -1024

[1,1,-4,1,1,-16,30,-16,1,1,-64,676,-2752,4678,
 -2752,676,-64,1,1,-256,13560,-316160,3830300,
 -25002240,87841480,-180202240,227671110,
 -180202240,87841480,-25002240,3830300,-316160,
 13560,-256,1,1,-1024]

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Last modified December 5 23:38 EST 2021. Contains 349558 sequences. (Running on oeis4.)