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A001807 as a simple table

n a(n)
5 120
6 4320
7 105840
8 2257920
9 45722880
10 914457600
11 18441561600
12 379369267200
13 8014175769600
14 174530938982400
15 3926946127104000
16 91390746230784000
17 2200993805058048000
18 54855537910677504000
19 1414489227553898496000
20 37719712734770626560000

[120,4320,105840,2257920,45722880,914457600,
 18441561600,379369267200,8014175769600,
 174530938982400,3926946127104000,
 91390746230784000,2200993805058048000,
 54855537910677504000,1414489227553898496000,
 37719712734770626560000]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)