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A242128
as a simple table
n
a(n)
1
5
2
10
3
15
4
15
5
30
6
25
7
30
8
50
9
40
10
40
11
50
12
60
13
60
14
75
15
75
[5,10,15,15,30,25,30,50,40,40,50,60,60,75,75]