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A106558 formatted as a simple table:

n a(n)
1 3
2 8
3 38
4 264
5 2896
6 37638
7 639830
8 12156759
9 279605448
10 8108557990
11 251365297667
12 9300516013674

[3,8,38,264,2896,37638,639830,12156759,279605448,
 8108557990,251365297667,9300516013674]

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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