A111904
formatted as a simple table:
n
a(n)
1
0
2
0
3
1
4
1
5
5
6
12
7
59
8
107
9
269
10
641
11
1457
12
3553
[0,0,1,1,5,12,59,107,269,641,1457,3553]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 21 10:15 EST 2009. Contains 171081 sequences.
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