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A079681
as a simple table
n
a(n)
5
1
6
5
7
265
8
2367
9
237493
10
2576561
11
338350897
12
616410400171
13
7811559753873
[1,5,265,2367,237493,2576561,338350897, 616410400171,7811559753873]