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A085807 as a simple table

n a(n)
0 1
1 0
2 1
3 4
4 64
5 1152
6 34372
7 1335008
8 69599744
9 4577345152
10 374491314176
11 37154032517376
12 4402467119882240
13 613680867638476800
14 99443966100565999872
15 18534733913629064343552
16 3937496200758879526977536
17 945776134421421651222708224
18 255043190756805184245158084608

[1,0,1,4,64,1152,34372,1335008,69599744,
 4577345152,374491314176,37154032517376,
 4402467119882240,613680867638476800,
 99443966100565999872,18534733913629064343552,
 3937496200758879526977536,
 945776134421421651222708224,
 255043190756805184245158084608]

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Last modified April 21 10:03 EDT 2019. Contains 322328 sequences. (Running on oeis4.)