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A176692
as a simple table
n
a(n)
0
2
1
5
2
10
3
20
4
47
5
166
6
1279
7
30654
8
2760820
[2,5,10,20,47,166,1279,30654,2760820]
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Last modified April 19 11:31 EDT 2024. Contains 371792 sequences. (Running on oeis4.)