A018596
formatted as a simple table:
n
a(n)
1
1
2
3
3
7
4
9
5
11
6
21
7
33
8
63
9
77
10
99
11
231
12
693
[1,3,7,9,11,21,33,63,77,99,231,693]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 17 23:40 EST 2009. Contains 171025 sequences.
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