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A082671
as a simple table
n
a(n)
1
3
2
4
3
5
4
6
5
9
6
31
7
41
8
373
9
589
10
812
11
989
12
1115
13
1488
14
1864
15
1918
16
4412
17
4686
18
5821
19
13830
[3,4,5,6,9,31,41,373,589,812,989,1115,1488,1864, 1918,4412,4686,5821,13830]