A086108
formatted as a simple table:
n
a(n)
1
2
2
3
3
5
4
7
5
12
6
21
7
113
8
115
9
131
10
151
11
311
12
511
[2,3,5,7,12,21,113,115,131,151,311,511]
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N. J. A. Sloane
(
njas@research.att.com
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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.
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