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A008336 as a simple table

n a(n)
1 1
2 1
3 2
4 6
5 24
6 120
7 20
8 140
9 1120
10 10080
11 1008
12 11088
13 924
14 12012
15 858
16 12870
17 205920
18 3500640
19 194480
20 3695120
21 184756
22 3879876
23 176358
24 4056234
25 97349616
26 2433740400
27 93605400
28 2527345800

[1,1,2,6,24,120,20,140,1120,10080,1008,11088,924,
 12012,858,12870,205920,3500640,194480,3695120,
 184756,3879876,176358,4056234,97349616,2433740400,
 93605400,2527345800]

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Last modified November 15 03:37 EST 2018. Contains 317225 sequences. (Running on oeis4.)