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A068215 formatted as a simple table:

n a(n)
0 2
1 6
2 30
3 210
4 1890
5 20790
6 270270
7 1896516717212415135141110350293750000
8 1220462921565155916674902677397230198502690752000000000 

[2,6,30,210,1890,20790,270270,
 1896516717212415135141110350293750000,
 1220462921565155916674902677397230198502690752000000000]

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

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