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A054926 formatted as a simple table:

n a(n)
1 1
2 0
3 0
4 2
5 5
6 19
7 132
8 1579
9 33366

[1,0,0,2,5,19,132,1579,33366]

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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.


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