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A006558 formatted as a simple table:

n a(n)
1 1
2 2
3 33
4 242
5 11605
6 28374
7 171893
8 1043710445721
9 2197379769820

[1,2,33,242,11605,28374,171893,1043710445721,
 2197379769820]

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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