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A084123 formatted as a simple table:

n a(n)
1 2
2 6
3 55
4 444
5 848
6 122555221
7 161131161
8 5729689869275
9 7587952597857
10 35757255275753
11 182196497222794691281 

[2,6,55,444,848,122555221,161131161,5729689869275,
 7587952597857,35757255275753,
 182196497222794691281]

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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

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