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A137042
as a simple table
n
a(n)
1
1
2
3
3
6
4
13
5
19
6
31
7
63
8
369
9
31131
10
969119
[1,3,6,13,19,31,63,369,31131,969119]
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Last modified July 12 23:13 EDT 2024. Contains 374257 sequences. (Running on oeis4.)