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A132418
as a simple table
n
a(n)
0
1
1
2
2
3
3
5
4
10
5
21
6
43
7
86
8
129
9
215
10
430
11
903
12
1849
13
3698
14
5547
15
9245
16
18490
17
38829
18
79507
[1,2,3,5,10,21,43,86,129,215,430,903,1849,3698, 5547,9245,18490,38829,79507]