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A000289 formatted as a simple table:

n a(n)
0 1
1 4
2 7
3 31
4 871
5 756031
6 571580604871
7 326704387862983487112031
8 106735757048926752040856495274871386126283608871 

[1,4,7,31,871,756031,571580604871,
 326704387862983487112031,
 106735757048926752040856495274871386126283608871]

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

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