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A301745
as a simple table
n
a(n)
3
1
4
2
5
4
6
7
7
17
8
25
9
56
10
71
11
142
12
133
13
299
14
330
15
578
16
577
[1,2,4,7,17,25,56,71,142,133,299,330,578,577]