A133762
formatted as a simple table:
n
a(n)
1
9
2
21
3
49
4
51
5
57
6
141
7
1011
8
2661
9
21471
10
64869
11
357561
12
1750989
13
5409570201
14
107563623099
15
657637783581
[9,21,49,51,57,141,1011,2661,21471,64869,357561, 1750989,5409570201,107563623099,657637783581]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 17 23:40 EST 2009. Contains 171025 sequences.
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