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A289051
as a simple table
n
a(n)
1
1
2
2
3
3
4
7
5
16
6
53
7
95
8
105
9
125
10
163
11
358
12
423
13
562
14
1774
15
3459
16
13957
17
17962
18
51179
19
65963
20
72808
[1,2,3,7,16,53,95,105,125,163,358,423,562,1774, 3459,13957,17962,51179,65963,72808]