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A109897 as a simple table

n a(n)
1 120
2 55440
3 253955520
4 4475671200
5 33891580800
6 7146019520640
7 106137499051584000
8 240679032790296606105600
9 74684882115043200
10 230656425830328960
11 66654064122818055916032000
12 171176782669200
13 282328002094320
14 126639913316232476160000
15 859891329773280

[120,55440,253955520,4475671200,33891580800,
 7146019520640,106137499051584000,
 240679032790296606105600,74684882115043200,
 230656425830328960,66654064122818055916032000,
 171176782669200,282328002094320,
 126639913316232476160000,859891329773280]

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Last modified May 9 20:59 EDT 2021. Contains 343746 sequences. (Running on oeis4.)