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A171636 as a simple table

n a(n)
1 2
2 24
3 0
4 1
5 480
6 0
7 16
8 13440
9 0
10 360
11 0
12 1
13 483840
14 0
15 10752
16 0
17 42
18 21288960
19 0
20 403200
21 0
22 1728
23 0
24 1
25 1107025920
26 0
27 18247680
28 0
29 79200
30 0
31 80
32 66421555200
33 0
34 968647680
35 0
36 4118400
37 0
38 5280
39 0
40 1
41 4516665753600
42 0
43 59041382400
44 0
45 242161920

[2,24,0,1,480,0,16,13440,0,360,0,1,483840,0,10752,
 0,42,21288960,0,403200,0,1728,0,1,1107025920,0,
 18247680,0,79200,0,80,66421555200,0,968647680,0,
 4118400,0,5280,0,1,4516665753600,0,59041382400,0,
 242161920]

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Last modified January 25 08:01 EST 2021. Contains 340416 sequences. (Running on oeis4.)