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A094481
as a simple table
n
a(n)
1
13
2
29
3
53
4
173
5
293
6
1373
7
2213
8
4493
9
5333
10
9413
11
10613
12
18773
13
26573
14
27893
[13,29,53,173,293,1373,2213,4493,5333,9413,10613, 18773,26573,27893]