A072252
formatted as a simple table:
n
a(n)
1
27
2
93
3
309
4
981
5
2901
6
7509
7
13653
[27,93,309,981,2901,7509,13653]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.
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