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A034920
as a simple table
n
a(n)
1
1
2
1
3
4
4
10
5
28
6
64
7
325
8
1218
9
4764
10
14009
11
92417
12
435525
[1,1,4,10,28,64,325,1218,4764,14009,92417,435525]
