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A358456
as a simple table
n
a(n)
1
1
2
1
3
2
4
3
5
7
6
17
7
47
8
117
9
321
10
895
11
2556
12
7331
13
21435
14
63116
15
187530
[1,1,2,3,7,17,47,117,321,895,2556,7331,21435, 63116,187530]