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A361863
as a simple table
n
a(n)
1
1
2
2
3
3
4
9
5
26
6
69
7
335
8
1018
9
6629
10
22805
11
182988
12
703745
[1,2,3,9,26,69,335,1018,6629,22805,182988,703745]
