A028411
formatted as a simple table:
n
a(n)
0
1
1
3
2
5
3
9
4
18
5
37
6
84
7
209
8
571
[1,3,5,9,18,37,84,209,571]
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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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