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A088464
as a simple table
n
a(n)
5
31
6
61
7
181
8
283
9
811
10
1279
11
1999
12
2551
13
3931
14
4159
15
5659
16
6553
17
8389
18
9241
19
9463
[31,61,181,283,811,1279,1999,2551,3931,4159,5659, 6553,8389,9241,9463]