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A093990 formatted as a simple table:

n a(n)
1 1
2 2
3 8
4 68
5 550
6 5404
7 54768
8 581868
9 6329407
10 70335294
11 794064734

[1,2,8,68,550,5404,54768,581868,6329407,70335294,
 794064734]

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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