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A210443 as a simple table

n a(n)
0 1
1 1
2 1
3 6
4 21
5 150
6 962
7 8640
8 80220
9 884520
10 10709520
11 140873040
12 2098741680
13 32163828480
14 568234774800
15 9957054159360
16 203333391011520
17 4013297314266240
18 92967912795139200
19 2041979786688441600
20 52890421861957680000
21 1279950952105367942400
22 36648398470742114918400

[1,1,1,6,21,150,962,8640,80220,884520,10709520,
 140873040,2098741680,32163828480,568234774800,
 9957054159360,203333391011520,4013297314266240,
 92967912795139200,2041979786688441600,
 52890421861957680000,1279950952105367942400,
 36648398470742114918400]

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Last modified June 30 05:22 EDT 2022. Contains 354913 sequences. (Running on oeis4.)