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A173849 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 24
5 120
6 720
7 5040
8 40320
9 362880
10 2903040
11 32659200
12 333849600
13 4470681600
14 55244851200
15 855496857600
16 12362073292800
17 216999220838400
18 3584572069478400
19 70276861528473600
20 1305169212624076800
21 28251875803447296000
22 582386191297118208000

[1,1,2,6,24,120,720,5040,40320,362880,2903040,
 32659200,333849600,4470681600,55244851200,
 855496857600,12362073292800,216999220838400,
 3584572069478400,70276861528473600,
 1305169212624076800,28251875803447296000,
 582386191297118208000]

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Last modified April 6 18:49 EDT 2020. Contains 333286 sequences. (Running on oeis4.)