A018728
formatted as a simple table:
n
a(n)
1
1
2
7
3
19
4
49
5
133
6
931
[1,7,19,49,133,931]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
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