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A101064
as a simple table
n
a(n)
1
0
2
1
3
4
4
7
5
13
6
54
7
102
8
330
9
1066
10
13710
11
24396
12
54582
[0,1,4,7,13,54,102,330,1066,13710,24396,54582]
