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A343398
as a simple table
n
a(n)
0
1
1
2
2
1
3
4
4
9
5
30
6
97
7
373
8
1405
9
5630
10
22672
11
93045
12
384403
13
1602156
14
6712128
15
28268504
[1,2,1,4,9,30,97,373,1405,5630,22672,93045,384403, 1602156,6712128,28268504]