A028857
formatted as a simple table:
n
a(n)
2
2
3
6
4
18
5
94
6
500
7
3485
[2,6,18,94,500,3485]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 17 23:40 EST 2009. Contains 171025 sequences.
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