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A010787
as a simple table
n
a(n)
1
1
2
1
3
2
4
6
5
25
6
135
7
913
8
7499
9
73191
10
833597
11
10917343
12
162402263
[1,1,2,6,25,135,913,7499,73191,833597,10917343, 162402263]
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Last modified June 20 07:21 EDT 2013. Contains 226422 sequences.
