A066454
formatted as a simple table:
n
a(n)
1
0
2
0
3
1
4
4
5
10
6
34
7
71
8
246
9
522
10
1783
11
3765
12
12858
13
27496
[0,0,1,4,10,34,71,246,522,1783,3765,12858,27496]
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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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