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A300993 as a simple table

n a(n)
1 1
2 1
3 8
4 84
5 1080
6 16056
7 266256
8 4816080
9 93638016
10 1937252160
11 42339628800
12 972303685632
13 23365476089856
14 585706819083264
15 15276194983411200
16 413695882240574976
17 11612673418376392704
18 337392794531354462208
19 10133165365696293507072
20 314252173854006410465280
21 10053170842576476899524608
22 331455812860465669006442496

[1,1,8,84,1080,16056,266256,4816080,93638016,
 1937252160,42339628800,972303685632,
 23365476089856,585706819083264,15276194983411200,
 413695882240574976,11612673418376392704,
 337392794531354462208,10133165365696293507072,
 314252173854006410465280,
 10053170842576476899524608,
 331455812860465669006442496]

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Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)