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A060315
as a simple table
n
a(n)
1
1
2
2
3
4
4
10
5
29
6
76
7
284
8
1413
9
7187
10
38103
11
231051
12
1765186
13
10539427
[1,2,4,10,29,76,284,1413,7187,38103,231051, 1765186,10539427]