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A217863 as a simple table

n a(n)
1 1
2 1
3 2
4 4
5 16
6 16
7 96
8 192
9 576
10 576
11 5760
12 5760
13 69120
14 69120
15 69120
16 138240
17 2211840
18 2211840
19 39813120
20 39813120
21 39813120
22 39813120
23 875888640
24 875888640
25 4379443200
26 4379443200
27 13138329600
28 13138329600
29 367873228800
30 367873228800
31 11036196864000

[1,1,2,4,16,16,96,192,576,576,5760,5760,69120,
 69120,69120,138240,2211840,2211840,39813120,
 39813120,39813120,39813120,875888640,875888640,
 4379443200,4379443200,13138329600,13138329600,
 367873228800,367873228800,11036196864000]

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Last modified January 15 19:28 EST 2019. Contains 319171 sequences. (Running on oeis4.)