A143851
formatted as a simple table:
n
a(n)
1
2
2
13
3
167
4
2239
5
439867
[2,13,167,2239,439867]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 18 21:37 EST 2009. Contains 171024 sequences.
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