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A217356
as a simple table
n
a(n)
1
1
2
2
3
4
4
6
5
12
6
22
7
50
8
270
9
606
10
800
11
1704
12
5462
13
6194
14
9206
15
10306
16
105380
[1,2,4,6,12,22,50,270,606,800,1704,5462,6194,9206, 10306,105380]