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A057734 as a simple table

n a(n)
1 1
2 2
3 4
4 10
5 24
6 66
7 180
8 522
9 1532
10 4984 

[1,2,4,10,24,66,180,522,1532,4984]

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Last modified May 25 21:30 EDT 2013. Contains 225649 sequences.