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A072155 as a simple table

n a(n)
1 1
2 2
3 6
4 3
5 15
6 5
7 35
8 70
9 210
10 210
11 2310
12 770
13 10010
14 10010
15 30030
16 15015
17 255255
18 255255
19 4849845
20 4849845
21 4849845
22 4849845
23 111546435
24 37182145
25 37182145
26 37182145
27 111546435
28 111546435
29 3234846615
30 3234846615
31 100280245065
32 200560490130
33 200560490130

[1,2,6,3,15,5,35,70,210,210,2310,770,10010,10010,
 30030,15015,255255,255255,4849845,4849845,4849845,
 4849845,111546435,37182145,37182145,37182145,
 111546435,111546435,3234846615,3234846615,
 100280245065,200560490130,200560490130]

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Last modified January 20 23:20 EST 2019. Contains 319343 sequences. (Running on oeis4.)