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A171768
as a simple table
n
a(n)
1
0
2
7
3
81
4
283
5
684
6
1318
7
8792
8
15975
9
61274
10
314072
11
4057579
[0,7,81,283,684,1318,8792,15975,61274,314072, 4057579]
