A018436
formatted as a simple table:
n
a(n)
1
1
2
3
3
5
4
9
5
15
6
27
7
45
8
81
9
135
10
405
[1,3,5,9,15,27,45,81,135,405]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 1 13:27 EST 2009. Contains 167806 sequences.
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