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A163736
as a simple table
n
a(n)
1
1
2
4
3
17
4
29
5
73
6
265
7
1200
8
4888
9
17897
10
62437
11
216583
12
751019
13
2584540
14
8793604
[1,4,17,29,73,265,1200,4888,17897,62437,216583, 751019,2584540,8793604]