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A199921
as a simple table
n
a(n)
1
7
2
31
3
93
4
215
5
389
6
573
7
691
8
691
9
573
10
389
11
215
12
93
13
31
14
7
15
1
[7,31,93,215,389,573,691,691,573,389,215,93,31,7, 1]
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Last modified September 24 03:28 EDT 2024. Contains 376185 sequences. (Running on oeis4.)