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A329863
as a simple table
n
a(n)
0
0
1
0
2
1
3
0
4
3
5
6
6
9
7
22
8
47
9
88
10
179
11
354
12
691
13
1344
14
2617
15
5042
16
9709
17
18632
18
35639
19
68010
20
129556
[0,0,1,0,3,6,9,22,47,88,179,354,691,1344,2617, 5042,9709,18632,35639,68010,129556]