A118100
formatted as a simple table:
n
a(n)
0
1
1
2
2
5
3
17
4
75
5
400
6
2543
7
19834
8
241639
[1,2,5,17,75,400,2543,19834,241639]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 6 11:04 EST 2009. Contains 170427 sequences.
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