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A333788
as a simple table
n
a(n)
1
9
2
15
3
25
4
51
5
85
6
289
7
771
8
1285
9
4369
10
66049
11
196611
12
327685
13
1114129
14
16843009
15
4295098369
[9,15,25,51,85,289,771,1285,4369,66049,196611, 327685,1114129,16843009,4295098369]