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A048855 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 8
5 32
6 192
7 1152
8 9216
9 82944
10 829440
11 8294400
12 99532800
13 1194393600
14 16721510400
15 250822656000
16 4013162496000
17 64210599936000
18 1155790798848000
19 20804234379264000
20 416084687585280000

[1,1,1,2,8,32,192,1152,9216,82944,829440,8294400,
 99532800,1194393600,16721510400,250822656000,
 4013162496000,64210599936000,1155790798848000,
 20804234379264000,416084687585280000]

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Last modified April 23 06:08 EDT 2019. Contains 322381 sequences. (Running on oeis4.)