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A060987
as a simple table
n
a(n)
0
1
1
2
2
3
3
4
4
7
5
11
6
18
7
20
8
31
9
51
10
69
11
120
12
189
13
258
14
327
15
358
16
427
[1,2,3,4,7,11,18,20,31,51,69,120,189,258,327,358, 427]