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A339548
as a simple table
n
a(n)
2
2
3
3
4
4
5
7
6
11
7
19
8
35
9
56
10
105
11
177
12
321
13
610
14
1001
15
1893
16
3186
17
5714
18
10073
[2,3,4,7,11,19,35,56,105,177,321,610,1001,1893, 3186,5714,10073]