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A087668
as a simple table
n
a(n)
1
8
2
9
3
11
4
13
5
15
6
133
7
2317
8
39845
9
108167
10
46779959
11
70246181
12
248897669
13
452691117
14
1137506437
15
3089581031
[8,9,11,13,15,133,2317,39845,108167,46779959, 70246181,248897669,452691117,1137506437, 3089581031]
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Last modified May 3 19:50 EDT 2024. Contains 372222 sequences. (Running on oeis4.)