A138602
formatted as a simple table:
n
a(n)
1
20
2
21
3
22
4
23
5
32
6
33
7
83
8
140
9
1122
[20,21,22,23,32,33,83,140,1122]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.
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