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A157395 as a simple table

n a(n)
1 1
2 1
3 5
4 1
5 15
6 20
7 1
8 105
9 80
10 60
11 1
12 425
13 1200
14 300
15 120
16 1
17 3075
18 10400
19 5400
20 720
21 120
22 1
23 15855
24 102200
25 75600
26 15120
27 840
28 0
29 1
30 123515
31 1149120
32 907200
33 241920
34 20160
35 0
36 0
37 1
38 757755
39 12783680
40 13426560
41 3719520
42 362880

[1,1,5,1,15,20,1,105,80,60,1,425,1200,300,120,1,
 3075,10400,5400,720,120,1,15855,102200,75600,
 15120,840,0,1,123515,1149120,907200,241920,20160,
 0,0,1,757755,12783680,13426560,3719520,362880]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)