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A131177
as a simple table
n
a(n)
1
1
2
4
3
11
4
23
5
41
6
67
7
102
8
147
9
204
10
274
11
358
12
458
13
575
14
710
15
865
16
1041
17
1239
18
1461
[1,4,11,23,41,67,102,147,204,274,358,458,575,710, 865,1041,1239,1461]