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A243789
as a simple table
n
a(n)
1
1
2
1
3
2
4
4
5
9
6
30
7
89
8
379
9
1864
10
12365
11
106951
12
1272286
13
20722347
[1,1,2,4,9,30,89,379,1864,12365,106951,1272286, 20722347]