A052508
formatted as a simple table:
n
a(n)
0
4
1
5
2
10
3
26
4
70
5
188
6
510
7
1384
8
3760
9
10220
10
27779
11
75510
12
205256
13
557941
14
1516639
[4,5,10,26,70,188,510,1384,3760,10220,27779,75510, 205256,557941,1516639]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
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