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A111022
as a simple table
n
a(n)
1
0
2
1
3
2
4
4
5
10
6
40
7
55
8
162
9
264
10
506
11
870
12
948
13
1339
14
3587
15
6428
16
48490
17
81487
[0,1,2,4,10,40,55,162,264,506,870,948,1339,3587, 6428,48490,81487]