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A156895 formatted as a simple table:

n a(n)
1 3
2 7
3 31
4 271
5 4591
6 151471
7 9845551
8 326409519151
9 16455349947998422816223361143099916435126171767057238357700938736968751 

[3,7,31,271,4591,151471,9845551,326409519151,
 16455349947998422816223361143099916435126171767057238357700938736968751]

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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