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A147175
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
1
10
1
11
1
12
1
13
3
14
3
15
11
16
11
17
27
18
27
19
57
20
57
21
269
22
269
[1,1,1,1,1,1,1,1,1,1,1,1,3,3,11,11,27,27,57,57, 269,269]