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A137236
as a simple table
n
a(n)
1
0
2
1
3
2
4
6
5
10
6
15
7
94
8
198
9
219
10
4543
11
11511
12
12638
13
45606
[0,1,2,6,10,15,94,198,219,4543,11511,12638,45606]