A003109
formatted as a simple table:
n
a(n)
3
1
4
1
5
17
6
117
7
1413
8
46389
9
1211085
[1,1,17,117,1413,46389,1211085]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
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