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A053171
as a simple table
n
a(n)
1
81
2
321
3
825
4
1689
5
2601
6
4185
7
5529
8
8145
9
10401
10
13137
[81,321,825,1689,2601,4185,5529,8145,10401,13137]
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Last modified September 17 11:15 EDT 2024. Contains 375987 sequences. (Running on oeis4.)