A089588
formatted as a simple table:
n
a(n)
0
1
1
2
2
2
3
7
4
2
5
9
6
38
7
79
8
2
9
220
10
821
11
1780
12
2168
[1,2,2,7,2,9,38,79,2,220,821,1780,2168]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 2 11:54 EST 2009. Contains 167921 sequences.
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