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A005569 as a simple table

n a(n)
1 4
2 34
3 308
4 3024
5 31680
6 349206
7 4008004
8 47530912
9 579058896
10 7215393640
11 91644262864
12 1183274479040
13 15497363512800
14 205519758825150
15 2755739674246500
16 37314861293793600
17 509727100259638800

[4,34,308,3024,31680,349206,4008004,47530912,
 579058896,7215393640,91644262864,1183274479040,
 15497363512800,205519758825150,2755739674246500,
 37314861293793600,509727100259638800]

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Last modified May 11 21:35 EDT 2021. Contains 343808 sequences. (Running on oeis4.)