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A128438 as a simple table

n a(n)
1 1
2 1
3 2
4 3
5 12
6 3
7 20
8 35
9 280
10 252
11 2520
12 2310
13 27720
14 25740
15 24024
16 45045
17 720720
18 226893
19 4084080
20 775975
21 246341
22 235144
23 5173168
24 14872858
25 356948592
26 343219800
27 2974571600
28 2868336900
29 80313433200
30 77636318760
31 2329089562800

[1,1,2,3,12,3,20,35,280,252,2520,2310,27720,25740,
 24024,45045,720720,226893,4084080,775975,246341,
 235144,5173168,14872858,356948592,343219800,
 2974571600,2868336900,80313433200,77636318760,
 2329089562800]

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Last modified April 24 10:11 EDT 2024. Contains 371935 sequences. (Running on oeis4.)