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A212395 as a simple table

n a(n)
0 0
1 0
2 3
3 23
4 164
5 1252
6 10512
7 97344
8 990432
9 11010528
10 132966720
11 1734793920
12 24330205440
13 365150833920
14 5840673108480
15 99204809356800
16 1783428104908800
17 33833306484633600
18 675513065777356800
19 14160039606855475200
20 310935875030323200000

[0,0,3,23,164,1252,10512,97344,990432,11010528,
 132966720,1734793920,24330205440,365150833920,
 5840673108480,99204809356800,1783428104908800,
 33833306484633600,675513065777356800,
 14160039606855475200,310935875030323200000]

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Last modified June 16 12:38 EDT 2019. Contains 324152 sequences. (Running on oeis4.)