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A163800
as a simple table
n
a(n)
1
2
2
5
3
30
4
54
5
81
6
109
7
149
8
186
9
513
10
1089
11
8158
12
8533
13
17178
14
34478
15
913274
16
976402
[2,5,30,54,81,109,149,186,513,1089,8158,8533, 17178,34478,913274,976402]