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A067710 as a simple table

n a(n)
1 1
2 5
3 17
4 110
5 394
6 4884
7 18108
8 294384
9 2054736
10 27986400
11 160460640
12 5733590400
13 26029779840
14 727452230400
15 11030096851200
16 223495556659200
17 1579093018675200
18 83918534992588800
19 553210247226470400

[1,5,17,110,394,4884,18108,294384,2054736,
 27986400,160460640,5733590400,26029779840,
 727452230400,11030096851200,223495556659200,
 1579093018675200,83918534992588800,
 553210247226470400]

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Last modified February 19 20:51 EST 2019. Contains 320328 sequences. (Running on oeis4.)