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A079455 formatted as a simple table:

n a(n)
1 1
2 1
3 2
4 6
5 20
6 104
7 716
8 7624
9 122010

[1,1,2,6,20,104,716,7624,122010]

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.


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