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A055511
as a simple table
n
a(n)
1
3
2
5
3
11
4
41
5
89
6
317
7
337
8
991
9
1873
10
2053
11
2377
12
4093
13
4297
14
4583
15
6569
16
13033
17
15877
[3,5,11,41,89,317,337,991,1873,2053,2377,4093, 4297,4583,6569,13033,15877]