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A047803 as a simple table

n a(n)
0 1
1 720
2 146512
3 8565952
4 196434000
5 2317602912
6 17225174720
7 93710019456
8 407503812688
9 1487330605840
10 4744665673056
11 13523554712640
12 35251061710528
13 84944383084512
14 192127846616960
15 409984044318336
16 834655060080720

[1,720,146512,8565952,196434000,2317602912,
 17225174720,93710019456,407503812688,
 1487330605840,4744665673056,13523554712640,
 35251061710528,84944383084512,192127846616960,
 409984044318336,834655060080720]

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Last modified May 9 10:28 EDT 2021. Contains 343732 sequences. (Running on oeis4.)