A037294
formatted as a simple table:
n
a(n)
1
2
2
7
3
18
4
42
5
90
6
186
[2,7,18,42,90,186]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 17 13:29 EST 2009. Contains 170826 sequences.
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