A031981
formatted as a simple table:
n
a(n)
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
10
9
11
10
12
11
13
12
14
13
15
14
16
15
17
16
18
17
19
18
20
19
21
20
22
21
23
22
24
23
25
24
26
25
29
26
30
27
31
28
32
29
33
30
34
31
37
32
38
33
39
[1,2,3,4,5,6,7,10,11,12,13,14,15,16,17,18,19,20, 21,22,23,24,25,26,29,30,31,32,33,34,37,38,39]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
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