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A162118 formatted as a simple table:

n a(n)
1 2
2 4
3 25
4 408
5 18003
6 2289232
7 851979730
8 942937083934
9 3167530249345690
10 33089477020771124591
11 1100195641116766627675728 

[2,4,25,408,18003,2289232,851979730,942937083934,
 3167530249345690,33089477020771124591,
 1100195641116766627675728]

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Last modified December 5 17:24 EST 2009. Contains 170342 sequences.

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