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A103067
as a simple table
n
a(n)
1
1
2
4
3
18
4
28
5
55
6
1728
7
1876
8
1884
9
6841
10
10782
11
25366
12
98446
13
137250
[1,4,18,28,55,1728,1876,1884,6841,10782,25366, 98446,137250]