A121179
formatted as a simple table:
n
a(n)
0
1
1
1
2
1
3
4
4
19
5
91
6
476
7
2586
8
14421
9
82225
10
476913
[1,1,1,4,19,91,476,2586,14421,82225,476913]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified November 30 13:13 EST 2009. Contains 167758 sequences.
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