A018778
formatted as a simple table:
n
a(n)
1
1
2
3
3
9
4
113
5
339
6
1017
[1,3,9,113,339,1017]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 20 00:58 EST 2009. Contains 171054 sequences.
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