A027851
formatted as a simple table:
n
a(n)
0
1
1
1
2
5
3
24
4
188
5
1915
6
28634
7
1627672
[1,1,5,24,188,1915,28634,1627672]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 17 13:29 EST 2009. Contains 170826 sequences.
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