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A307519
as a simple table
n
a(n)
1
2
2
1
3
2
4
6
5
10
6
17
7
34
8
72
9
142
10
288
11
585
12
1195
13
2413
14
4898
[2,1,2,6,10,17,34,72,142,288,585,1195,2413,4898]