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A006523 as a simple table

n a(n)
1 2
2 240
3 725760
4 12454041600
5 711374856192000
6 102181884343418880000
7 31022420086661971968000000
8 17683523987479403909087232000000
9 17366635237623772991036388802560000000
10 27527506182452690092631959163161804800000000 

[2,240,725760,12454041600,711374856192000,
 102181884343418880000,31022420086661971968000000,
 17683523987479403909087232000000,
 17366635237623772991036388802560000000,
 27527506182452690092631959163161804800000000]

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Last modified April 25 12:32 EDT 2024. Contains 371969 sequences. (Running on oeis4.)