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A126070
as a simple table
n
a(n)
1
1
2
1
3
15
4
7
5
42
6
30
7
273
8
33
9
2310
10
1326
11
2431
12
1311
[1,1,15,7,42,30,273,33,2310,1326,2431,1311]
