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A058778
as a simple table
n
a(n)
1
3
2
5
3
19
4
25
5
29
6
47
7
167
8
407
9
3909
10
4433
11
4845
12
4921
13
30349
14
78873
[3,5,19,25,29,47,167,407,3909,4433,4845,4921, 30349,78873]