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A001568 formatted as a simple table:

n a(n)
1 1
2 1
3 2
4 49
5 629
6 6961
7 38366
8 1899687
9 133065253
10 6482111309

[1,1,2,49,629,6961,38366,1899687,133065253,
 6482111309]

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Last modified December 6 19:58 EST 2009. Contains 170429 sequences.


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