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A268367 as a simple table

n a(n)
1 1
2 1
3 0
4 1
5 4
6 0
7 1
8 0
9 12
10 0
11 1
12 36
13 216
14 96
15 0
16 1
17 0
18 2700
19 0
20 480
21 0
22 1
23 400
24 54000
25 643680
26 116640
27 5760
28 0
29 1
30 0
31 1054200
32 0
33 190188000
34 0
35 40320
36 0
37 1
38 4900
39 20991600
40 12243840000
41 269568000000
42 128247235200
43 535610880
44 645120
45 0
46 1
47 0
48 445365900

[1,1,0,1,4,0,1,0,12,0,1,36,216,96,0,1,0,2700,0,
 480,0,1,400,54000,643680,116640,5760,0,1,0,
 1054200,0,190188000,0,40320,0,1,4900,20991600,
 12243840000,269568000000,128247235200,535610880,
 645120,0,1,0,445365900]

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)