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A147066
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
5
6
13
7
28
8
77
9
344
10
1851
11
11392
12
75139
13
594346
14
5700553
15
66311093
16
914949886
[1,1,1,1,5,13,28,77,344,1851,11392,75139,594346, 5700553,66311093,914949886]