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A306573
as a simple table
n
a(n)
1
3
2
5
3
7
4
81
5
185
6
254
7
623
8
1087
9
2407
10
7862
11
8721
12
9353
13
13154
[3,5,7,81,185,254,623,1087,2407,7862,8721,9353, 13154]