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A058378
as a simple table
n
a(n)
1
0
2
1
3
1
4
3
5
8
6
29
7
114
8
583
9
3310
10
21168
11
144622
12
1039495
13
7731540
[0,1,1,3,8,29,114,583,3310,21168,144622,1039495, 7731540]