A011980
formatted as a simple table:
n
a(n)
5
1
6
4
7
5
8
8
9
12
10
17
11
20
[1,4,5,8,12,17,20]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 21 10:15 EST 2009. Contains 171081 sequences.
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