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A138346
as a simple table
n
a(n)
0
2
1
1
2
7
3
31
4
41
5
83
6
151
7
1097
8
1811
9
10093
10
19219
11
2971
12
41999
[2,1,7,31,41,83,151,1097,1811,10093,19219,2971, 41999]