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A372595
as a simple table
n
a(n)
0
0
1
1
2
2
3
3
4
3
5
4
6
5
7
13
8
37
9
4
10
5
11
6
12
14
13
38
14
7
15
9
16
37
17
22539988369405
[0,1,2,3,3,4,5,13,37,4,5,6,14,38,7,9,37, 22539988369405]