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A130718 formatted as a simple table:

n a(n)
1 2
2 2
3 12
4 240
5 725760
6 79833600
7 2615348736000
8 711374856192000
9 102181884343418880000
10 21777738900836704321536000000
11 17683523987479403909087232000000 

[2,2,12,240,725760,79833600,2615348736000,
 711374856192000,102181884343418880000,
 21777738900836704321536000000,
 17683523987479403909087232000000]

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

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