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A053871 as a simple table

n a(n)
0 1
1 0
2 2
3 8
4 60
5 544
6 6040
7 79008
8 1190672
9 20314880
10 387099936
11 8148296320
12 187778717632
13 4702248334848
14 127140703364480
15 3691602647581184
16 114562300528369920
17 3784124901630435328
18 132555364873399378432
19 4908221631901073295360
20 191549525877429961604096 

[1,0,2,8,60,544,6040,79008,1190672,20314880,
 387099936,8148296320,187778717632,4702248334848,
 127140703364480,3691602647581184,
 114562300528369920,3784124901630435328,
 132555364873399378432,4908221631901073295360,
 191549525877429961604096]

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Last modified May 14 12:38 EDT 2024. Contains 372533 sequences. (Running on oeis4.)