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A004133
as a simple table
n
a(n)
2
1
3
3
4
6
5
11
6
19
7
31
8
43
9
63
10
80
11
110
12
138
13
169
14
202
15
241
16
288
17
330
[1,3,6,11,19,31,43,63,80,110,138,169,202,241,288, 330]