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A147336
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
5
10
17
11
31
12
53
13
121
14
345
15
909
[1,1,1,1,1,1,1,1,5,17,31,53,121,345,909]
