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A178432
as a simple table
n
a(n)
0
1
1
1
2
1
3
3
4
5
5
13
6
41
7
142
8
665
9
4288
10
36455
11
436672
12
6926801
[1,1,1,3,5,13,41,142,665,4288,36455,436672, 6926801]