A028312
formatted as a simple table:
n
a(n)
1
3
2
9
3
11
4
15
5
19
6
21
7
27
8
33
9
39
[3,9,11,15,19,21,27,33,39]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 10 00:48 EST 2009. Contains 170565 sequences.
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