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A101720
as a simple table
n
a(n)
1
0
2
3
3
8
4
9
5
30
6
69
7
159
8
170
9
276
10
629
11
723
12
3716
13
5541
14
5633
15
10655
16
12723
17
31953
[0,3,8,9,30,69,159,170,276,629,723,3716,5541,5633, 10655,12723,31953]