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A147005
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
3
6
1
7
5
8
1
9
8
10
1
11
60
12
7
13
328
14
21
15
2111
16
77
17
21687
18
479
19
274683
20
3600
21
4419391
[1,1,1,1,3,1,5,1,8,1,60,7,328,21,2111,77,21687, 479,274683,3600,4419391]