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A177441
as a simple table
n
a(n)
1
1
2
4
3
9
4
20
5
32
6
59
7
88
8
159
9
231
10
444
11
659
12
1262
13
1897
14
3814
15
1187707
[1,4,9,20,32,59,88,159,231,444,659,1262,1897,3814, 1187707]