A131339
formatted as a simple table:
n
a(n)
10
1
11
4
12
17
13
51
14
155
15
427
16
1152
17
2983
[1,4,17,51,155,427,1152,2983]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 20 16:54 EST 2009. Contains 171081 sequences.
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