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A001627 as a simple table

n a(n)
1 1
2 0
3 2
4 44
5 1008
6 34432
7 1629280
8 101401344
9 8030787968
10 788377273856
11 93933191303424
12 13350759115563520
13 2231133728986759168
14 433075048506207645696
15 96617322164029448916992
16 24549315871469898190266368
17 7047652261245574026565877760

[1,0,2,44,1008,34432,1629280,101401344,8030787968,
 788377273856,93933191303424,13350759115563520,
 2231133728986759168,433075048506207645696,
 96617322164029448916992,
 24549315871469898190266368,
 7047652261245574026565877760]

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Last modified September 24 14:01 EDT 2022. Contains 356932 sequences. (Running on oeis4.)