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A161628 as a simple table

n a(n)
0 1
1 0
2 -1
3 0
4 -2
5 3
6 0
7 -3
8 18
9 -16
10 0
11 -4
12 72
13 -192
14 125
15 0
16 -5
17 240
18 -1440
19 2500
20 -1296
21 0
22 -6
23 720
24 -8640
25 30000
26 -38880
27 16807
28 0
29 -7
30 2016
31 -45360
32 280000
33 -680400
34 705894
35 -262144
36 0
37 -8
38 5376
39 -217728
40 2240000
41 -9072000
42 16941456
43 -14680064
44 4782969

[1,0,-1,0,-2,3,0,-3,18,-16,0,-4,72,-192,125,0,-5,
 240,-1440,2500,-1296,0,-6,720,-8640,30000,-38880,
 16807,0,-7,2016,-45360,280000,-680400,705894,
 -262144,0,-8,5376,-217728,2240000,-9072000,
 16941456,-14680064,4782969]

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Last modified September 24 04:09 EDT 2020. Contains 337316 sequences. (Running on oeis4.)