A147146
formatted as a simple table:
n
a(n)
1
1
2
1
3
1
4
1
5
3
6
9
7
19
8
67
9
271
10
1339
11
7503
12
48863
13
386667
14
3842993
15
45897369
16
657696677
[1,1,1,1,3,9,19,67,271,1339,7503,48863,386667, 3842993,45897369,657696677]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
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