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A072632
as a simple table
n
a(n)
1
1
2
3
3
8
4
21
5
55
6
149
7
404
8
1097
9
2981
10
8104
11
22027
12
59875
13
162755
14
442414
15
1202605
16
3269018
[1,3,8,21,55,149,404,1097,2981,8104,22027,59875, 162755,442414,1202605,3269018]