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A046058
as a simple table
n
a(n)
1
1
2
2
3
5
4
14
5
15
6
51
7
52
8
267
9
2328
10
56092
11
10494213
12
49487367289
[1,2,5,14,15,51,52,267,2328,56092,10494213, 49487367289]