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A101142
as a simple table
n
a(n)
1
0
2
3
3
6
4
33
5
81
6
450
7
771
8
2553
9
6249
10
15136
11
20073
12
37377
13
53067
[0,3,6,33,81,450,771,2553,6249,15136,20073,37377, 53067]