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A034921 formatted as a simple table:

n a(n)
1 3
2 4
3 9
4 23
5 67
6 192
7 833
8 2857
9 13797

[3,4,9,23,67,192,833,2857,13797]

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.


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