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A040025 formatted as a simple table:

n a(n)
0 4
1 15
2 93
3 668
4 5172
5 42042
6 353701
7 3036643
8 27045226
9 239093865
10 2158090933

[4,15,93,668,5172,42042,353701,3036643,27045226,
 239093865,2158090933]

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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