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A146663
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
3
12
3
13
9
14
9
15
23
16
23
17
67
18
67
19
379
20
379
21
2563
22
2563
23
18843
24
18843
[1,1,1,1,1,1,1,1,1,1,3,3,9,9,23,23,67,67,379,379, 2563,2563,18843,18843]