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A197549
as a simple table
n
a(n)
1
1
2
1
3
5
4
16
5
62
6
276
7
1222
8
5563
9
25805
10
120909
11
572011
12
2727485
13
13089106
14
63164265
[1,1,5,16,62,276,1222,5563,25805,120909,572011, 2727485,13089106,63164265]