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A147318
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
9
6
25
7
65
8
339
9
3162
10
37799
11
493077
12
7275441
13
148345435
14
4388356223
[1,1,1,1,9,25,65,339,3162,37799,493077,7275441, 148345435,4388356223]