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A175669 as a simple table

n a(n)
0 1
1 2
2 3
3 1
4 0
5 20
6 96
7 155
8 90
9 5
10 -6
11 0
12 280
13 2772
14 10518
15 18711
16 14385
17 1323
18 -2863
19 -126
20 360
21 0
22 2800
23 47040
24 323336
25 1157760
26 2238855
27 2050020
28 207158
29 -810600
30 -58505
31 322740
32 7956
33 -45360
34 0
35 12320
36 314160
37 3409472
38 20401128
39 72418826
40 150057435
41 154651321
42 12413874
43 -101524412
44 -6408765
45 82588957
46 3394248
47 -37374084
48 -546480
49 5443200
50 0

[1,2,3,1,0,20,96,155,90,5,-6,0,280,2772,10518,
 18711,14385,1323,-2863,-126,360,0,2800,47040,
 323336,1157760,2238855,2050020,207158,-810600,
 -58505,322740,7956,-45360,0,12320,314160,3409472,
 20401128,72418826,150057435,154651321,12413874,
 -101524412,-6408765,82588957,3394248,-37374084,
 -546480,5443200,0]

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Last modified May 17 12:55 EDT 2021. Contains 343971 sequences. (Running on oeis4.)