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A003189 formatted as a simple table:

n a(n)
1 1
2 1
3 1
4 2
5 6
6 156
7 7013488
8 29288387523484992
9 234431745534048922731115019069056

[1,1,1,2,6,156,7013488,29288387523484992,
 234431745534048922731115019069056]

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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