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A103964
as a simple table
n
a(n)
1
0
2
1
3
2
4
3
5
6
6
8
7
583
8
6393
9
9715
10
33288
11
3321063
12
5054502
13
31172165
[0,1,2,3,6,8,583,6393,9715,33288,3321063,5054502, 31172165]