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A074486
as a simple table
n
a(n)
0
1
1
3
2
9
3
11
4
15
5
129
6
131
7
137
8
139
9
143
10
153
11
171
12
175
13
255
[1,3,9,11,15,129,131,137,139,143,153,171,175,255]
