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A069220 as a simple table

n a(n)
1 1
2 1
3 2
4 3
5 12
6 5
7 20
8 105
9 280
10 63
11 2520
12 385
13 27720
14 6435
15 8008
16 45045
17 720720
18 85085
19 4084080
20 2909907
21 3695120
22 1322685
23 5173168
24 37182145
25 118982864
26 128707425
27 2974571600
28 717084225
29 80313433200
30 215656441
31 2329089562800

[1,1,2,3,12,5,20,105,280,63,2520,385,27720,6435,
 8008,45045,720720,85085,4084080,2909907,3695120,
 1322685,5173168,37182145,118982864,128707425,
 2974571600,717084225,80313433200,215656441,
 2329089562800]

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Last modified April 28 06:27 EDT 2024. Contains 372020 sequences. (Running on oeis4.)