A001843
formatted as a simple table:
n
a(n)
4
1
5
1
6
3
7
7
8
14
9
18
10
30
11
35
12
51
13
65
14
91
15
105
16
140
[1,1,3,7,14,18,30,35,51,65,91,105,140]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 8 08:31 EST 2009. Contains 170430 sequences.
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