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A369237
as a simple table
n
a(n)
1
1
2
1
3
2
4
6
5
10
6
15
7
30
8
69
9
137
10
243
11
451
12
853
13
1562
14
2912
15
5555
16
10459
17
19644
18
37039
19
69305
20
129346
[1,1,2,6,10,15,30,69,137,243,451,853,1562,2912, 5555,10459,19644,37039,69305,129346]