A018835
formatted as a simple table:
n
a(n)
2
4
3
6
4
4
5
8
6
4
7
9
8
4
9
6
10
4
11
11
12
4
13
11
14
4
15
6
16
4
17
12
18
4
19
13
20
4
21
6
22
4
23
13
24
4
25
8
26
4
27
6
28
4
29
14
30
4
31
15
32
4
33
6
34
4
35
8
36
4
[4,6,4,8,4,9,4,6,4,11,4,11,4,6,4,12,4,13,4,6,4,13, 4,8,4,6,4,14,4,15,4,6,4,8,4]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 13 23:45 EST 2009. Contains 170824 sequences.
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