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A156803
as a simple table
n
a(n)
1
1
2
2
3
3
4
6
5
10
6
22
7
43
8
104
9
250
10
720
11
2229
12
8361
13
36441
14
199610
15
1395326
[1,2,3,6,10,22,43,104,250,720,2229,8361,36441, 199610,1395326]